Finally Block in Java

Introduction

 

It is a special block in Java. It is a block in a program that always executes. If we want to perform an important task and want it to execute always in any condition then we use a finally block in Java.

 

Finally, Block in Java

 

The following describes the finally block in Java:

• In Java, finally is a special keyword.
• It always executes independently of any condition. 
• It is optional in Java. 
• It should be after the try-catch block in Java. 
• For a single try block, there can be a maximum of one finally block in Java. 
• Generally, we use a finally for closing the connections or closing the file and so on.
   
   

Examples of Finally in Java

 

No Exception Condition

package demo;
public class Demo {
 public static void main(String args[]) {
  try {
   int fig = 36 / 6;
   System.out.println(fig);
  } catch (NullPointerException e) {
   System.out.println(e);
  } finally {
   System.out.println("ALWAYS EXECUTE");
  }
  System.out.println("#**.......**#");
 }
}

Output

 

Exception Condition

package test;
public class Test {
 public static void main(String args[]) {
  try {
   int fig = 36 / 0;
   System.out.println(fig);
  } catch (NullPointerException e) {
   System.out.println(e);
  } finally {
   System.out.println("ALWAYS EXECUTE");
  }
  System.out.println("#**.......**#");
 }
}

Output

 

Exception Condition, But Handled

package trial;
public class Trial {
 public static void main(String args[]) {
  try {
   int fig = 36 / 0;
   System.out.println(fig);
  } catch (ArithmeticException e) {
   System.out.println(e);
  } finally {
   System.out.println("ALWAYS EXECUTE");
  }
  System.out.println("#**.......**#");
 }
}

Output

Summary

 

This article has explained the finally block in Java.