String concatenation is not implemented through the StringBuffer 

A try block without catch or finally will result in compiler error.

Which datatype is used to store command line arguments?

Predict the output of the following Java code.

Which method of the Object class can be used to generate a duplicate copy of the object on which it is called?

Select the situation where finally block will not be executed?

If I want to have common functions in a class and want to defer  implementations of some other functions to derived classes, then we need  to use

 What will be the output of the following code?

class A{
  public static void main(String args[]) {
    int arr[2];  
    System.out.println(arr[0]);
    System.out.println(arr[1]);
  }
}

Which of the following statements about public methods is correct?