Does the finally block always execute in Java

Question

I am learning Exception handling in java. I just want to know, does the finally block always get executed in Java?

Answer 1

If you have written finally block along with try-catch block, then finally block always gets executed.

public class TryCatchFinallyDemo {

public static void main(String[] args) {

 int a=10;

 int b=0;

 int c=5;


 try {

 System.out.println(a/b); //Exception occurs

 System.out.println(a/c); //Exception does not occur


 }

 catch(Exception e)

 {

 System.out.println("It is not valid to divide any number by zero");

 }


 finally {

 System.out.println("The code ends here! Happy Learning!"); //finally block always executes

   }
 }
}

Output will be:

When exception occurs:

It is not valid to divide any number by zero
The code ends here! Happy Learning!

When exception does not occur:

2
The code ends here! Happy Learning!

The finally block does not get executed only when:

1. If the JVm crashes

2. if you invoke System.exit()

Answer 2

public static void main(String[] args) {
    System.out.println(Test.test());
}

public static int test() {
    try {
        return 0;
    }
    finally {
        System.out.println("finally trumps return.");
    }
}

Output:

finally trumps return. 
0

Answer 3

If there is System.exit() present in the try-catch block then finally will not execute or if the system crashes. Otherwise, it will execute.