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Exception Handling in Java

Exception Handling in Java

April 30th, 2019 Java

Exception Handling in Java

Definition

Error – Handling becomes a necessary while developing a application to account for exceptional satiations that may occur during the program executions.
Exception can be generated by Java-run time system or they can be manually generated by code.

Types of Exception:

  • Checked Exception
  • Un-Checked Exception

Checked Exception:

Checked exception must be handled at compile time.

Un-Checked Exception:

Un-Checked exception must be handled at Run time.

Program:

public class ArithmeticExceptionDemo
{
public static void main(String[] args)
{
int x=100;
int y=0;
int z=x/y;
System.out.println("z"+z);
}
}

Output:

Exception in thread “main” java.lang.ArithmeticException: / by zero

Implement the  exception handling:

public class ArithmeticExceptionDemo
{
public static void main(String[] args)
{
int x=100;
int y=0;
try{
int z=x/y;
System.out.println("z"+z);
}catch(ArithmeticException e){
System.out.println (" x is not divided by zero");
}
}
}

Output:

x is not divided by zero
public class ArrayIndexOutExceptionDemo {
public static void main(String[] args) {
int [] inputArray={0,1,2};
int  k=0;
for(int i=0; i < inputArray.length;i++){
int j = inputArray[i] + inputArray[i+1];
System.out.println("J"+j);
}
}
}

Output:

J1

J3

Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 3

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