Which annotation defines unique identifier for a JPA entity?

Output of the given console application? public class Test34 { public static void main(String[] args) { int a = 2; switch(a) { default: System.out.print('_default'); case 0: System.out.print('_ZERO'); case 1: System.out.print('_ONE'); } } }

Result of the following code? public class JQ { public static void main(String[] args) { f(); } private static void f() { f(); } }

What is the internal implementation of ArrayList in Java?

Which keyword is used for implementing an interface in a class?

Which method is used in every Java program?

These two ways are used to create a Frame By creating the object of Frame class (association) By extending Frame class (inheritance)

The following specifies the advantages of It is lightweight. It supports pluggable look and feel. It follows MVC (Model View Controller) architecture.

Which is used to store data and partial results, as well as to perform dynamic linking, return values for methods, and dispatch exceptions?

Which is a component in AWT that can contain another components like buttons, textfields, labels etc.?

These four methods commonly used in?1)public void add(Component c)2)public void setSize(int width,int height)3)public void setLayout(LayoutManager m)4)public void setVisible(boolean)