Java Finally block – Exception handling
The finally block in Java is where crucial code is executed, such shutting a connection, among other things.The finally block in Java is always executed, regardless of whether an exception is handled. As a result, it includes all the required statements that must be printed whether or not an exception occurs.The try-catch block is followed by the finally block.
Syntax of Finally block:
try {
//Statements that may cause an exception
}
catch {
//Handling exception
}
finally {
//Statements to be executed
},
Example of Finally Block:
public class FinallyBlock{
public static void main(String[] args) {
try {
String s = null;
System.out.println(s.length());
} catch (ArithmeticException e) {
System.out.println("Arithmetic Exception ");
} catch (ArrayIndexOutOfBoundsException e) {
System.out.println("ArrayIndexOutOfBounds Exception ");
} catch (Exception e) {
System.out.println("Parent Exception ");
} finally {
System.out.println("finally block is always executed");
}
System.out.println("Execution done");
}
}
When you run this program, it will output:
Parent Exception
finally block is already executed
Execution done
When an exception occur but not handled by the catch block Example:
public class Finally Block{
public static void main(String[] args) {
try {
System.out.println("hello" + " " + 1/0);
} catch (ArrayIndexOutOfBoundsException e) {
System.out.println("ArrayIndexOutOfBounds Exception ");
}
finally {
System.out.println("finally block is always executed");
}
System.out.println("Execution done");
}
}
When you run this program, it will output:
finally block is always executed
Exception in thread “main” java.lang.ArithmeticException: / by zero
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