1

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I every man.



2

00:00:00,870 --> 00:00:06,300

So in this story I'm going to go ahead and I'm going to go inside this class country datasource class



3

00:00:06,840 --> 00:00:11,850

and inside this file and inside the curly braces of this class I'm going to create a new method called



4

00:00:12,270 --> 00:00:16,690

match with minimum level confidence of use or words.



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00:00:16,890 --> 00:00:18,110

So let's create that.



6

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Here it is going to be a public method.



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00:00:20,610 --> 00:00:27,580

And if you're going to specify the return type of the Smif it here which is going to be streamed by



8

00:00:27,610 --> 00:00:40,600

you and the name of the Smurfette is going to be match with minimum minimum confidence level of user.



9

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User words.



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Right.



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Let's put our performances here because we are going to actually specify that this method is going to



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accept some arguments.



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So let's specify those parameters here inside the practices of this method here.



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So the first argument is going to be released.



15

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OK let's put a pair of angle brackets here and inside the angle brackets we need to specify that data



16

00:01:02,830 --> 00:01:07,070

type of the objects that we are going to have inside this list.



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So it is going to be strange.



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Right.



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So let's actually put our space here and I'm going to specify the name of this allele which is going



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to be used for words.



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Come on now let's specify the second argument.



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The second parameter actually.



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So now let's actually specify the second trimester of the Smurfette here which is going to be an array



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of floats values.



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So just type in here float and and then put a pair of brackets in order to specify that it is going



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to be an array of floats values.



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And then here the name is going to be confidence confidence levels.



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Right.



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So let's open and close this method by using these curly braces.



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Let me create a new line here so that you can see what's going on.



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Yes.



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These are my faith here inside this class country data source class public street.



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This is the return type of this method the name of this method is much a match with minimum confidence



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level of use or words.



35

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This method has two prime hitters here.



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The first one is the use of words which is of type aerialist here strange and we have this a float values.



37

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Your confidence levels.



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So these are the two prime tools of this method.



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So now it's time to go inside the Smurfette and we are going to actually put our own logic here inside



40

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the curly braces of this method.



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So first of all we're are going to check that whether these two arguments that are going to be passed



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here to the Smurfette are actually null or not.



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00:02:29,560 --> 00:02:31,320

So let's create an if statement.



44

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If user votes as you can see I am referring to this parameter name right.



45

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Is equal to null or.



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And then here I'm going to refer to this confidence levels argument here.



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So confidence levels is equal to null then in that case are going to return a string value from this



48

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actually nymphet.



49

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So you are going to return the default country OK because if the user course is actually not all the



50

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confidence level is actually null This means that we have not access to and to a specific Vort.



51

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Right.



52

00:03:10,180 --> 00:03:15,040

So in that case you're are going to show that Canada on the map to the user.



53

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So let's return.



54

00:03:16,060 --> 00:03:22,180

Default actually the default country name semi-colon.



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00:03:22,200 --> 00:03:27,570

So let me show you the instance variables that we created here you can see that we created some constants



56

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here.



57

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The first one is the country key.



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We have the minimum confidence level.



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We have the default country name Canada default country latitude longitude and the default message.



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00:03:38,820 --> 00:03:39,840

So let's scroll down here.



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00:03:39,840 --> 00:03:46,290

So after this if statement here inside the Smurfette I'm going to put some more color codes here.



62

00:03:46,290 --> 00:03:52,320

So let's create an integer variable here int number of user words.



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Number of use of words.



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Assignment operator.



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So I'm going to refer to this Aurelie still use the words dot and then I can actually call this method



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and this Aurelia's size semicolon.



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So in this case it can actually return the number of elements that we have inside this list and it's



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00:04:09,930 --> 00:04:13,650

going to assign those elements actually the size of those elements.



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The number of those elements to this valuable number of user words.



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So now let's actually create some space here.



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I want to talk about the enumeration interface.



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First let me show you the documentation here.



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So let's open the Android actually documentation on your web browser.



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So now you can see that I actually searched for the enumeration interface and this interface is inside



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a job that U-T package.



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So here you can see this link here.



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Let's click on it.



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So now it says that the enumeration is actually an interface a public interface.



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And let's look at it this description he had an object that implements the enumeration interface generates



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a series of elements one at a time.



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OK.



82

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So it is very important a series of elements one at a time.



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Successive calls to the next element before the return the successive elements of the series.



84

00:05:10,050 --> 00:05:15,590

So here you can take a look at an example here and let's look at the other descriptions here.



85

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It says methods are provided to enumerate for the elements of a vector.



86

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The key is of a hash table and the values in a hash table.



87

00:05:25,350 --> 00:05:32,520

Enumerations are also used to specify the input streams to a sequence input stream.



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Note the functionality of this interface is duplicated by the rated iterator interface.



89

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In addition iterator adds an optional remove operation and has short term effect names.



90

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New implementations should consider using iterator in preference to enumeration.



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So let's actually look at the summary here.



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It says we have this method has more elements tests.



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If this enumeration contains more elements next element returns the next element of this enumeration.



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If this enumeration object has at least one more element to provide.



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00:06:10,470 --> 00:06:14,100

So let's go back to android studio here.



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So here it is RMF at match with minimum confident confidence level of use of words here inside this



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country data source class.



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So instead method.



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After this line of put here in line number 43 here you are actually getting the number of elements that



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we have inside.



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Is this right.



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00:06:29,670 --> 00:06:32,060

Let's create an enumeration here.



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00:06:32,280 --> 00:06:39,640

So here we can say enumeration OK let's put a pair of angle brackets inside the angle brackets.



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00:06:39,640 --> 00:06:44,900

When it is specified the data type of the values that you're going to have inside this information.



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So it is going to be strange and the name of this enumeration is going to be countries here let's create



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a for loop and first of all we need to specify the initial value which is going to be of that integer



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and the name is index set and then let's initially assign the value 0 to the value of a semicolon.



108

00:07:06,060 --> 00:07:11,730

So here we need to actually specify the condition that determines how many times this fall is going



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to be executed.



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So here we are going to actually use two conditions instead of one.



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So let's see how we can do that first.



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I'm going to say this for loop it's going to be executed until the value of the index variable is actually



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less than the number of user words.



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So let's step in here.



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Number of user reports and I am actually using these and the logical operator index is less than the



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value of these confidence levels that Len.



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Actually we are good at accessing the length of this Arey which is off the floor.



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So here I can refer to these arguments name confidence levels that lead and index is less than that.



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Actually the length of this at a confidence level is here semicolon.



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And finally we need to say index plus plus.



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So let's open and close this followed by using these curly braces.



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Let me create a new line here so that you can see what's going on.



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Yes exactly.



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So let's go inside this for loop here and let's see what you are going to do next.



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So here we are going to say if let's actually refer to these confidence levels at a if confidence levels



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practice index.



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So here we are going to access this specific element.



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All these specific confidence level that we have inside this specific index.



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So for example for the first time that is full of here it's going to be executed the index value is



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zero.



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So it's going to go inside this at a confidence level and it's going to access the value that we have



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inside the index zero.



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And here you are saying that if confidence levels index zero is less than actually mean and minimum



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confidence level here.



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So we created a variable and actually a constant here inside our class country datasource here in line



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number 16.



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Right.



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So you can see this line of code and here you specify that the minimum confidence level here is zero



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point four here.



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So it is actually a float value.



141

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And this is going to go in to specify the minimum confidence level.



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And this means that values below the confidence level are not actually accepted.



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OK we're going to break out of our Meffert if the specific value is actually below the minimum confidence



144

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level.



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00:09:36,510 --> 00:09:43,560

So the minimum confidence level must be actually equal to this value or greater than this value not



146

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below the value.



147

00:09:44,640 --> 00:09:45,180

Right.



148

00:09:45,180 --> 00:09:50,010

So here you can see that I actually mistakenly created a pretty good point here.



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00:09:50,100 --> 00:09:53,020

So in order to deal with this point I just need to click on it.



150

00:09:53,210 --> 00:09:53,710

OK.



151

00:09:53,730 --> 00:09:56,220

In order to create it again I just need to click on the site.



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00:09:56,460 --> 00:09:59,320

And in order to do it I just need to click on it again.



153

00:09:59,430 --> 00:10:01,460

So let's scroll down here.



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00:10:01,770 --> 00:10:07,230

So if you're I mean set is meant for the writing so it is match with minimum confidence levels a level



155

00:10:07,230 --> 00:10:08,270

of use that it words.



156

00:10:08,640 --> 00:10:14,370

And here I am saying if confidence level index is less than minimum confidence level so it is not accepted.



157

00:10:14,430 --> 00:10:16,300

Here we are going to say.



158

00:10:16,710 --> 00:10:18,770

So it's going to break out of the sniff at here.



159

00:10:18,780 --> 00:10:20,940

This effort that we actually created here.



160

00:10:21,540 --> 00:10:24,710

So after this if statement here I can't say.



161

00:10:24,840 --> 00:10:27,640

So let's create a variable of type string here.



162

00:10:27,660 --> 00:10:31,870

So just typing here is strange string and the name of this variable is very important.



163

00:10:31,890 --> 00:10:36,870

Just taken he had accepted user vord.



164

00:10:37,040 --> 00:10:40,630

You can see that I am actually choosing a name meaningful here right.



165

00:10:40,730 --> 00:10:43,550

Accepted user or assignment operator.



166

00:10:43,550 --> 00:10:48,610

So here I can refer to this at a list here that we have as an argument.



167

00:10:48,680 --> 00:10:57,920

So here I can't say user votes that get and here I just need to pass the index semicolon.



168

00:10:57,920 --> 00:11:04,420

So in this way we are actually accessing the accepted user word according to that minimum confidence



169

00:11:04,420 --> 00:11:06,680

here that is specified here right.



170

00:11:07,370 --> 00:11:13,790

So according to this minimum confidence level it is going to actually get the accepted user award here.



171

00:11:14,150 --> 00:11:19,610

According to this index right a specific word that is really related to this index and it's going to



172

00:11:19,750 --> 00:11:23,480

slide this forward to this very well accepted use that word.



173

00:11:23,510 --> 00:11:29,510

So after this line of quote here I'm going to actually initialize this valuable this local variable



174

00:11:29,510 --> 00:11:35,240

that we actually declared in line number 47 here inside the Smurfette.



175

00:11:35,240 --> 00:11:39,840

So I can actually say countries assignment operator.



176

00:11:40,000 --> 00:11:41,500

So let me scroll to the top here.



177

00:11:41,500 --> 00:11:45,040

Here you can see that he created a variable of type hash table.



178

00:11:45,220 --> 00:11:49,590

So I told you hash table consists of keys and values.



179

00:11:49,690 --> 00:11:56,430

So we have keys and values and this means that a specific value is related to that specific key.



180

00:11:56,440 --> 00:12:02,380

So here inside the angle brackets the first string here is actually related to the data type of the



181

00:12:02,380 --> 00:12:05,400

keys that we are going to have inside this hash table.



182

00:12:05,500 --> 00:12:11,020

And the second string here is related to the data type of the values that we are going to have inside



183

00:12:11,020 --> 00:12:11,960

this hash table.



184

00:12:11,980 --> 00:12:14,470

So the name is countries and messages.



185

00:12:14,470 --> 00:12:17,010

So you can see that its name is really meaningful.



186

00:12:17,080 --> 00:12:22,760

Countries refer to the actually the key and messages referred to the value.



187

00:12:22,780 --> 00:12:25,090

So let's scroll down here.



188

00:12:25,500 --> 00:12:29,450

And inside this here I'm going to initialize this country's information here right.



189

00:12:29,560 --> 00:12:35,560

So I can refer to that hash table here countries and messages that cheese.



190

00:12:35,640 --> 00:12:40,810

So I'm going to access the keys of this hash table variable.



191

00:12:41,260 --> 00:12:43,170

So the keys are countries right.



192

00:12:43,210 --> 00:12:50,030

So that's why I am assigning the keys to this variable and you can see that its name is countries information.



193

00:12:50,050 --> 00:12:51,870

So after this line of code here.



194

00:12:51,970 --> 00:12:56,610

So here let's create a loop so void.



195

00:12:56,620 --> 00:13:05,690

And here I'm going to refer to this integration here countries that has more elements has more elements



196

00:13:05,810 --> 00:13:12,860

here I am saying that if this country's information has more elements we are actually saying that if



197

00:13:12,860 --> 00:13:19,190

this country's in question actually does have for example some elements inside it OK if it is whether



198

00:13:19,370 --> 00:13:26,000

it is empty or not if it is not empty and it is and it has more elements then we are actually going



199

00:13:26,000 --> 00:13:30,190

to open and close this window by using these curly braces here too.



200

00:13:30,220 --> 00:13:32,700

Now let me show you the documentation.



201

00:13:33,050 --> 00:13:37,370

So here you can see that the summary here and it says has elements Mefford.



202

00:13:37,760 --> 00:13:42,810

And it says tests if this enumeration contains more elements.



203

00:13:42,890 --> 00:13:49,480

So let's go back to Andrew in Studio inside the curly braces of this y loop so here can create another



204

00:13:49,480 --> 00:13:51,520

value of types 3 in here.



205

00:13:51,800 --> 00:13:53,540

And the name is going to be selected.



206

00:13:53,540 --> 00:13:59,600

Country assignment operator and here I can refer to this enumeration countries.



207

00:13:59,750 --> 00:14:05,650

That next element semicolon Let me show you the Android documentation.



208

00:14:05,690 --> 00:14:11,240

So take a look at this map with your next element returns the next element of this information.



209

00:14:11,270 --> 00:14:16,270

If this enumeration object has at least one more element to prove what.



210

00:14:16,370 --> 00:14:21,980

So it's going to actually give us the next element to the specific elements that is available and it's



211

00:14:21,980 --> 00:14:28,070

going to assign it to this variable selected country and now it's time to create another if statement



212

00:14:28,070 --> 00:14:29,010

inside this way.



213

00:14:29,090 --> 00:14:35,730

So if and here I can actually refer to this user word valuable that we created here.



214

00:14:35,980 --> 00:14:38,310

Let me show you this right here and here.



215

00:14:38,480 --> 00:14:40,020

Accepted use of word.



216

00:14:40,160 --> 00:14:40,700

Right.



217

00:14:40,700 --> 00:14:48,500

So if accepted use that word that equals ignore chase.



218

00:14:48,630 --> 00:14:49,460

So what is this.



219

00:14:49,490 --> 00:14:55,470

If it means this me if it means that if this accepted use or what string value is actually equal to



220

00:14:55,530 --> 00:14:58,290

another a string value that are going to pass that is MF'er.



221

00:14:58,290 --> 00:15:01,470

So what does this case mean here means.



222

00:15:01,470 --> 00:15:11,320

This means that the leaders of this accepted use or word here are actually according to the case.



223

00:15:11,340 --> 00:15:16,540

For example if it is capitalized or it is lowercase it's going to ignore it.



224

00:15:16,560 --> 00:15:24,470

OK if it is capitalized it's going to ignore the capitalisation actually aspect of this word.



225

00:15:24,750 --> 00:15:31,130

So it's going to ignore the case and it's going to actually it doesn't matter whether it is lowercase



226

00:15:31,160 --> 00:15:38,270

or capitalized it can actually just compare whether these this accepted use or word is equal to the



227

00:15:38,270 --> 00:15:39,870

selected country.



228

00:15:40,220 --> 00:15:45,490

OK then in that case it's going to actually open it it's open and close this if statement here by using



229

00:15:45,490 --> 00:15:46,530

these curly braces.



230

00:15:46,720 --> 00:15:49,980

So now let me show you this method in the Android mentation.



231

00:15:49,990 --> 00:15:57,430

So here just into this you are a developer and writer slash referenced slash Java slash land slash string



232

00:15:57,430 --> 00:15:58,640

that HDMI out.



233

00:15:58,930 --> 00:16:02,080

So here I searched for the Smurfit equals ignore case.



234

00:16:02,080 --> 00:16:08,630

So you can see this buffer here and it says compares this strange to and other streams ignored into



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case considerations.



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This is very important.



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Ignoring case considerations.



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So let's go back to our studio at this if statement here.



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We are actually a hundred and fifty percent sure that the accepted user vote is actually equal to the



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selected country.



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Right.



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So now we can actually return accepted user award from the Smurfit accepted user worth semicolon.



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So now finally here you can see let me show you the effort here.



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The return type of this method is strange.



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Right.



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We're going to return this specific string value that is actually matched with minimum confidence level



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of the user rewards.



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So here we are going to return the accepted user vote.



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But what happens if for example these these conditions fail.



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What happens if this condition that you specified for this fall of here fail.



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And this fall doesn't go into it is not going to be executed anymore.



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In that case you're going to return the default country from the Smurfette.



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So here if you scroll down here you can see that this is the end in place of the Smurfette.



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Right.



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And here we have an error and it says missing the return statement.



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We must return a value from this method but it doesn't matter what happens.



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OK we must return osting value Firby-Smith and the compiler must be sure that our value osting value



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is going to be returned from dismissal.



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We can actually return now we can say return not for it.



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Let me just type in Knol but it's not accepted here right.



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If you return not from the Smurfette.



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Later when we are actually calling the Smurfette And for example if we want to get osting value from



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this method and it's going a little not probably Smurfette in that case we are going to have problems



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on our application it may actually crash.



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So if you are going to return as a default string value which is going to be the default country name



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semicolon.



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Right that's it.



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This is our method.



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This is my foot inside this class.



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So now it's time to add another method to this class country data source.



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So before the end in curly brace of this class country datasource and Asadi an incredible test of the



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Smurfette here let's add another method to just type in here Puplick and then return type of this method



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is going to be strange and the name of this method is.



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Get the info.



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Get the info of the country.



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So let's put up at Apprentice's here.



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So if you are going to pass actually an argument is my fair lady when we are going to call this method



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so let's specify the prime meter here.



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So the parameter is going to be of type strange and the name is going to be country.



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Let's open and close this method by using these curly braces.



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So here I can trn.



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So let's refer to our hash table instance variable countries and messages.



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So here we want to pass the key and get the value and we all know that the country is the key and the



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message or the info from that country is going to be the value.



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So here when I say countries and messages that get Let's call this method get.



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So here you can see that we need to pass the key which is going to be OFF-SIDE object right.



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So we all know that's three and is a subclass of object.



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So if I pass the country here as an argument to the Smurfette semicolon So here it is the key right.



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So when I pass the key when I get the message or the info from that key that's it that's the actually



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function of this method.



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So let's actually look at this class here.



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Here you can see that we actually created some constants in this class and we haven't used them yet.



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You are going to use them later.



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Don't worry about this one.



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But for now just know that we have these constants and you can see that these constants are actually



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static.



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Right.



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This means that by just referring to the name of this class you can directly access these constants



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because they are static.



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They are actually class variables so that's it.



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And I think that's enough for this tutorial.



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If you have any questions about the concepts that I taught you in this lesson please post the discussion



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in the course and then I'll do my best to answer all of your questions.



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Thank you very much for watching and I'll see you in the next tutorial.