Exception handling in java is similar as in C#. There are
couple of differences like java allows checked exceptions which are handled by
the caller of the program. Another minor difference is in the finally statement
which can have return and break statement which is not the case in C#.
Refer to previous article for Introduction to Exception
handling Exception Handling Basics in C#
Following code illustrates the basic concept of exception
handling dealing with divide by zero exception in Java. As we know exception is any abnormal condition in a program
which abrupt the normal flow of the program. Exception handling allows users to
take corrective measures and have easy to understand information returned to
them in case an exception arises.
import java.util.*;
public class ExceptionTrial {
public
static void main(String[] args){
Scanner
input = new Scanner(System.in); //allows the user to input values
int
x=1;
do{
try{
//put the code in try block which may raise an exception
System.out.println("Enter
a number :");
int
n1=input.nextInt();
System.out.println("Enter
another number to divide");
int
n2=input.nextInt();
int sum
= n1/n2;
System.out.println(sum);
x=2;
}
catch(Exception
e){ //handles the exception, lets the
user know whats wrong.
System.out.println("You
can not divide a number by zero");
}
}while(x==1);
// loop to let user enter correct value after encountering exception
}
}
Screenshot // click to open a higher resolution version
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