Java 'new' Keyword Tutorial

new

The new keyword in Java is used to create new objects. It instantiates a class by allocating memory for a new object and returning a reference to that memory. The new keyword also invokes the object constructor.

Usage

The new keyword is typically used in the following way:

ClassName object = new ClassName();

ClassName: Name of the class to be instantiated.
object: Name of the reference variable.
new: Keyword to instantiate the class.
ClassName(): The constructor of the class.

Example

public class Student {
  void study() { System.out.println("studying..."); }
  
  public static void main(String args[]) {
    Student s = new Student(); // creating object
    s.study();
  }
}

Memory Allocation

When you create an object using the new keyword, memory is allocated in the Heap area.