notes on core java in java

A thread is in the ready state after it has been created and started. In Java, when a thread is created and started, its initial state is “NEW.” The thread is considered to be in the “NEW” state from the time it is created using the new keyword or by instantiating a class that extends … Read more

The java.awt.AWTEvent class is the highest-level class in the AWT event-class hierarchy. In Core Java, the top of the AWT (Abstract Window Toolkit) event hierarchy is the java.awt.AWTEvent class. The AWTEvent class is the superclass for all AWT event classes. It is part of the AWT package and provides a common base class for all types of … Read more

A task’s priority is an integer value that identifies the relative order in which it should be executed with respect to other tasks. The scheduler attempts to schedule higher priority tasks before lower priority tasks. In the context of Core Java and multithreading, a task’s priority refers to the priority assigned to a thread or … Read more

The CheckboxMenuItem class extends the MenuItem class to support a menu item that may be checked or unchecked. In Core Java, MenuItem and CheckboxMenuItem are both classes that belong to the AWT (Abstract Window Toolkit) package, which is used for creating graphical user interfaces in Java. Here’s the difference between the two: MenuItem: MenuItem represents a simple item in … Read more

If a checked exception may be thrown within the body of a method, the method must either catch the exception or declare it in its throws clause. The “catch or declare” rule is associated with checked exceptions in Java. According to this rule, if a method may throw a checked exception, the method must either … Read more