1

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That's no go ahead and look at the third item which is item 63 and it is about how we can associate

2

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additional information with an exception so that it can help in better debugging.

3

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And it's a very effective tool for debugging purpose.

4

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And the last item we will see in the next list.

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So let's just go ahead and extend our code and look at the third item OK let's go ahead and continue

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with all of them all.

7

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So earlier we had this API for marching exception.

8

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And here is the exact output and you can see that there is this the Stockbridge's that is getting printed

9

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here.

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But sometimes this doctress alone may not be helpful to the debugger.

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So the debugger might need some additional information in order to fix the problem.

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Many times it might be good enough but not but sometimes the debugger might need some additional information

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.

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And sometimes the debugger is debugging might want to reproduce the problem and it might be very difficult

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to reproduce the error.

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So it is better to have more additional information along with the exception.

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Sometimes that will be very useful.

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An item sixty three is all about that.

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So item 63 says that if we go here into API parser it basically say it basically just to include as

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much information as possible from the context.

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When an exception has been generated for example it suggests that we can use all the parameter Dometic

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parameters information and also any any relevant instance valuable information.

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So the items are just to pick all of this information and to encapsulate that in the exception itself

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.

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So that can be done.

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Information can be encapsulated because of it into a bill.

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There is a constructor which takes a string as an input.

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So the items says we can concatenate all of this information and the parameter information on any instance

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variable information and we can pass it on unbe can invoke that particular construct.

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Here we are invoking a constructor but we can also invoke the other constructor and for that we need

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to include it here we need to create that constructor.

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So let's just go ahead and see Jenrette constructors from superclass.

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So let's just set de-select on and set up this one exception of string.

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So this is the thing.

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And so we have a new constructor within our odd exception class to simply invoking the constructor from

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the superclass which is an exception.

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So just go ahead and also pass a string here.

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All we need to do is this message here.

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So it's a detail message that we are passing.

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Just Mode-S So we're passing the response which is from here.

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Doctoral response that we got from the lip service and we are also passing the element which is giving

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us the problem which is the court and the part not information the name of the partner.

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So all of this will be no part of the exception itself.

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OK.

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And it's a very effective way of dealing with exceptions in certain in certain pieces of court especially

46

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when you are hoping some data integration systems on you if you run into such issues so you can put

47

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inter-regional information on pass it over to the partner beams.

48

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Double up.

49

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So OK so that would be very helpful for them to fix the problem.

50

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And personally also I have encountered such issues and these this kind of additional information has

51

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has really helped me out to fix the problem so I was able to pass a pass on this information to the

52

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excellent other team and they were able to fix it.

53

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So it's really very helpful.

54

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So let's just go back here.

55

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And there's sprint that one more time

56

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so as you can see now the exception that has the stackless as before it opens the exception name and

57

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it's also providing the additional information.

58

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So this is called as a daily message.

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So that's the prince doctress matter.

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Let's also look at

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the string matters.

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So this is a prince doctress method from the exception class.

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Now let's look at the string third string method basically it prints only the first line and it's not

64

00:04:39,970  -->  00:04:42,090
going to print the stack trace.

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So as you can see here you are to string notes printing on the fosterling.

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Now there is also a method called Get message which only opens only the original information yes knew

67

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that

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you can see here it only provides additional information.

69

00:05:02,870  -->  00:05:09,470
So that's how you can pass additional information but the items is that one problem with this is sometimes

70

00:05:09,470  -->  00:05:15,950
don't the person might want to extract this additional information not the entire string but just the

71

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additional information embedded within the string unfolded.

72

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They might write some parsing code extractor But the problem with that is here.

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So we're constructing the string so API Parslow is a different component.

74

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Right.

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It's not.

76

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So exceptions demo is actually incorporating API parser now in the next release.

77

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If this you know if there are changes Disfarmer so I can start off response.

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If he changes it to something else and if he or if an exception is demo we are using this particular

79

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string to parse the response then because the format has been changed in the next release due to that

80

00:05:55,480  -->  00:05:59,140
you know the code or here might break the parsing code might break.

81

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So the items say is that you have certain parameters since exception class is simply an exception.

82

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It's simply a class.

83

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So why not have some parameters.

84

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Why not House officials here that represent the artist the individual feels individual values within

85

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the additional information.

86

00:06:19,570  -->  00:06:27,070
The response the element and the partner so we can maintain individual individual feels here and we

87

00:06:27,070  -->  00:06:34,060
can expose them through some access sort of metrics and to initialize them we can have a new constructor

88

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.

89

00:06:34,960  -->  00:06:40,570
So when we are invoking the ax instead of invoking this particular constructor we will invoke a new

90

00:06:40,570  -->  00:06:46,930
constructor which will actually initialize all those fields which represent this these individual elements

91

00:06:46,930  -->  00:06:48,830
within the traditional information.

92

00:06:48,850  -->  00:06:54,160
So that's the suggestion that that item gives and it is not followed.

93

00:06:54,160  -->  00:06:59,640
It seems according to Josh Block it's not even followed well within the Java library itself.

94

00:06:59,800  -->  00:07:03,650
But he highlighted the comments following this particular idiom.

95

00:07:03,760  -->  00:07:05,350
So let's just go ahead and do that.

96

00:07:07,210  -->  00:07:09,150
So let's first introduce those variables

97

00:07:23,160  -->  00:07:28,060
it's automatically created construct or BART we are.

98

00:07:28,090  -->  00:07:29,440
It's a new constructor.

99

00:07:29,490  -->  00:07:34,320
So we are going to join de-construct de-construct from the fetus.

100

00:07:34,700  -->  00:07:36,950
Just say all of the pentameters on this.

101

00:07:36,960  -->  00:07:39,920
So I think it's also a way to access some of my thoughts here.

102

00:07:42,370  -->  00:07:46,120
So generous good persons are cursed under this system set up get us

103

00:07:50,190  -->  00:07:55,870
so we have all the accessories here and the fields are initialized here.

104

00:07:56,210  -->  00:08:01,660
And we can also in the superclasses string constructor in this way.

105

00:08:04,900  -->  00:08:08,060
So you're also doing that and in addition to that we are doing this.

106

00:08:08,330  -->  00:08:08,740
OK.

107

00:08:08,770  -->  00:08:12,460
So that's the nice thing unbecome now for summer.

108

00:08:12,520  -->  00:08:17,360
Double up Perkel actually work only this particular constructor

109

00:08:29,450  -->  00:08:36,820
so this is how we look at a nice string is also getting constructed here.

110

00:08:36,950  -->  00:08:43,440
And if the client wants they can actually get the individual values of the additional information.

111

00:08:44,370  -->  00:08:55,130
Sophie go back here in let's say the developer wants only the element name so you can do that.

112

00:08:56,940  -->  00:09:02,850
You can see just getting anywhere near widgets or so that's about it.

113

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That's how we can capture additional information.

114

00:09:06,100  -->  00:09:11,660
Our industrial block highly recommends using this particular idiom for capturing additional information

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.

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00:09:12,410  -->  00:09:12,720
OK.

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Next we will look at the final item and that's also an interesting item on we would look at it in the

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next lesson.

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Thank you.