Try catch-(exception handling in java)

 Exception handling in java with examples program

Exception handling in java  with eclipse IDE example program and its output

program1

package javaproject1;

public class ExceptionDemo {

public static void main(String[] args) {

String[] fruit_array = {"apple","orange","grapes"};

System.out.println(fruit_array[2]);

System.out.println(fruit_array[3]);

System.out.println(fruit_array[1]);

}

}

program 1 output

Listen to the program 1, line number 9,10,11.

line 9 no error

Line 10 an error occurred

Therefore the rest of the statement is not executed(line 11)

Let's see how the error occurred and how to fix it.

In our program the array length is three.

Array values are arranged starting from zero index.

Let's see how the array values are arranged in this program starting from zero index.

fruit_array[0]-->apple in zeroth position

fruit_array[1]-->orange in first position

fruit_array[2]-->grapes in second position 

so fruit_array[3] is out of bound

This will generate an error.

Let's solve this problem with a try catch block.

observe program 2 and its output carefully.

program 2

package javaproject1;

public class ExceptionDemo {

public static void main(String[] args) {

String[] fruit_array = {"apple","orange","grapes"};

try {

System.out.println(fruit_array[2]);

System.out.println(fruit_array[3]);

}

catch(Exception e) {

System.out.println(e);

}

System.out.println(fruit_array[1]);

}

}

short explanation of exception handlng in java

short note in try catch block

output of program 1 and 2