Page 391 - CITS - Computer Software Application -TT

COMPUTER SOFTWARE APPLICATION - CITS

//calling the function
validate(13);
System.out.println(“rest of the code...”);

}
}
Output

The above code throw an unchecked exception. Similarly, we can also throw unchecked and user defined
exceptions.
Note: If we throw unchecked exception from a method, it is must to handle the exception or declare
in throws clause.
If we throw a checked exception using throw keyword, it is must to handle the exception using catch block or the
method must declare it using throws declaration.
Example 2: Throwing Checked Exception
Note: Every subclass of Error and RuntimeException is an unchecked exception in Java. A checked
exception is everything else under the Throwable class.

TestThrow2.java
import java.io.*;

public class TestThrow2 {

//function to check if person is eligible to vote or not
public static void method() throws FileNotFoundException {

FileReader file = new FileReader(“C:\\Users\\Anurati\\Desktop\\abc.txt”);

BufferedReader fileInput = new BufferedReader(file);

throw new FileNotFoundException();

}

//main method
public static void main(String args[]){
try
{

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CITS : IT&ITES - Computer Software Application - Lesson 101 - 108