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Exceptions in JAVA.txt
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Exceptions in JAVA.txt
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Types of Exception in JAVA :-
1. ArithmeticException
It is thrown when an exceptional condition has occurred in an arithmetic operation.
// Java program to demonstrate ArithmeticException
class ArithmeticException_Demo
{
public static void main(String args[])
{
try {
int a = 30, b = 0;
int c = a/b; // cannot divide by zero
System.out.println ("Result = " + c);
}
catch(ArithmeticException e) {
System.out.println ("Can't divide a number by 0");
}
}
}
2. NullPointerException
This exception is raised when referring to the members of a null object. Null represents nothing
//Java program to demonstrate NullPointerException
class NullPointer_Demo
{
public static void main(String args[])
{
try {
String a = null; //null value
System.out.println(a.charAt(0));
} catch(NullPointerException e) {
System.out.println("NullPointerException..");
}
}
}
3. StringIndexOutOfBoundsException
It is thrown by String class methods to indicate that an index is either negative than the size of the string
// Java program to demonstrate StringIndexOutOfBoundsException
class StringIndexOutOfBound_Demo
{
public static void main(String args[])
{
try {
String a = "This is like chipping "; // length is 22
char c = a.charAt(24); // accessing 25th element
System.out.println(c);
}
catch(StringIndexOutOfBoundsException e) {
System.out.println("StringIndexOutOfBoundsException");
}
}
}