try catch and return statement in java class

 

    

  In this java example, we will learn return and the use of exit(0)  in the try-catch block.  

 We will use a simple java class and how it will execute. 

     

Example :1

public class Mytry {

 

 

public  static  int test1() {

int i = 1;

try {

   

   

  return i;

} finally {

  i = 2;

System.out.println("i="+i);

}

}

 public  static  int test2() {

 int i = 1;

 try {

   

   System.exit(0);

   return i;

 } finally 

 {

   i = 2;

 System.out.println("m="+i);

 }

}

 

 public static void main(String[] args) {

     System.out.println("Hello, World!"); 

     

     int z= test1();

     System.out.println("z="+z);

     int k= test2();

     System.out.println("k="+k);

     

     

 }

}

Program output:---

Hello, World!

i=2

z=1

Example 2:-

public class Mytry {

 

 

 public  static  int test1() {

 int i = 1;

 try {

   

   

   return i;

 } finally {

   i = 2;

 System.out.println("i="+i);

 }

}

 public  static  int test2() {

 int i = 1;

 try {

   

   System.exit(0);

   return i;

 } finally 

 {

   i = 2;

 System.out.println("i="+i);

 }

}

 

 public static void main(String[] args) {

     System.out.println("Hello, World!"); 

     

     

     int k= test2();

/*** program terminates execution form here.

     System.out.println("k="+k);

      

     int z= test1();

     System.out.println("z="+z);

     

     

 }

}

Program output :

Hello, World!

In  the main() first, it calls test2() and try block 

System.exit(0) terminates the execution. There for test1()

not able to call.

These examples show the output depends upon how you call 

the methods.