When finally{} won't be reached?

[Jan Osykowski]

Hey guys,

My question is in the subject, when it will not be reached? I remember that I read in the book that there is such a case but now I can't find this part when it happenss.

Cheers,
Jan.

[Minhaj Mehmood]

When JVM terminate before reaching the finally statement, for example try to put
System.exit(0); in try block.


Hope this helps.

[Shanky Sohar]

Finalyy is always reacable untill you exit you JVM using system.exit()

[Shanky Sohar]

Below code will be more useful for your understanding

public class Test1 {
  	public static void main(String[] args) {
		try{
			System.out.println("try block");
			System.exit(0);
		}catch(Exception e){
			System.out.println("exception");
		}finally{
			System.out.println("finally");
		}
		
		}

}

[Avishkar Nikale]

Please correct me if I am wrong, in all cases where your thread terminates abruptly the finally will not run.

[Minhaj Mehmood]

Avishkar Nikale wrote:Please correct me if I am wrong, in all cases where your thread terminates abruptly the finally will not run.

true if jvm terminate abruptly in try/catch block then finally wont execute.

[Jan Osykowski]

Ok guys, thanks for the answers! This is the case that got away from me!

[Shanky Sohar]

Finally associate only with try/catch.
There should not be any finally without try/catch.

public class Test1 {
  	public static void main(String[] args){
		if(true)
			System.out.println("try block");
			throw new Exception();.
		}finally{//as there is no try finally cause compiler error
			System.out.println("finally");
		}
		
		}
}

[Shanky Sohar]

There should not be any finally with try atleast for unchecked exception
For checked exception catch is necessary unless method is declared to throw that excpetion
For example see the below code

public class Test1 {
  	public static void main(String[] args){//here  main method is not throwing Exception
		try{
			System.out.println("try block");
			throw new Exception();//here catch is necessary.
		}finally{//finalyy doesnot play any role for checked exception until we donot declare catch to catch that exception
			System.out.println("finally");
		}
		
		}
}