Nested try block
The try block within a try block is known as nested try block.
Why we need nested try block
It is required when different blocks like outer and inner may cause different exceptions.
Syntax-
//Main try block
try
{
statement of main try;
//try-catch block inside try block
try
{
statement;
//try-catch block inside nested try block
try
{
statement ;
}
catch(Exception ex)
{
//Exception code
}
}
catch(Exception ex)
{
//Exception code
}
}
//Catch for Main try block
catch(Exception ex)
{
//Exception code
}
//rest of the code...
Nested try block example:-
class Test1
{
public static void main(String args[])
{
try
{
try
{
System.out.println("Cannot divide by zero..divider should be greater than 0..");
int y =25/0;
}
catch(ArithmeticException e)
{
System.out.println(e);
}
try
{
int a[]=new int[5];
for(int i=0;i <=5;i++)
{
System.out.println(a[5]);
}
}
catch(ArrayIndexOutOfBoundsException e)
{
System.out.println(e);
}
try
{
String s=null;
System.out.println(s.length());
}
catch(NullPointerException e)
{
System.out.println(e);
}
System.out.println("i am not a part of try block...");
}
catch(Exception e)
{
System.out.println("Exception Handeled with catch..");
}
System.out.println("Rest of the data normal flow...");
}
}
OutPut:-
Cannot divide by zero..divider should be greater than 0..
java.lang.ArithmeticException: / by zero
java.lang.ArrayIndexOutOfBoundsException: 5
java.lang.NullPointerException
i am not a part of try block...
Rest of the data normal flow...
