complete tutorials on core java in java

getState().getState() In Core Java, to determine if a Checkbox is checked, you can use the isSelected() method. The isSelected() method returns a boolean value that indicates whether the Checkbox is currently in the checked state or not. Here’s an example: java import java.awt.*; import java.awt.event.*;public class CheckboxExample { public static void main(String[] args) { Frame … Read more

So they can be invoked as if they are a mathematical code library. The methods of the Math class in Java are declared as static because the Math class is designed to provide utility functions for mathematical operations, and there is no need to create an instance of the Math class to use these methods. … Read more

The == operator compares two objects to determine if they are the same object in memory. It is possible for two String objects to have the same value, but located indifferent areas of memory. In Java, the == operator compares the references of objects, not their actual content. When you use == to compare two String objects, … Read more

The JDK 1.02 event model uses an event inheritance or bubbling approach. In this model, components are required to handle their own events. If they do not handle a particular event, the event is inherited by (or bubbled up to) the component’s container. The container then either handles the event or it is bubbled up … Read more

A method’s throws clause must declare any checked exceptions that are not caught within the body of the method. In Java, the throws clause in a method signature is used to declare the exceptions that a method might throw during its execution. It specifies the types of exceptions that the method may not handle itself, … Read more