java constructor example

In Java, a constructor is a special method that is called when an object of a class is created. Constructors are used to initialize the state of an object, and they have the same name as the class.

Here is an example of a class with a constructor in Java:

public class Person {
  private String name;
  private int age;

  public Person(String name, int age) {
    this.name = name;
    this.age = age;
  }

  public String getName() {
    return name;
  }

  public int getAge() {
    return age;
  }
}

In this example, the Person class has two private fields: name and age. It also has a constructor that takes two arguments: a String for the name and an int for the age. The constructor initializes the name and age fields with the values passed as arguments.

To create a new Person object using the constructor, you can use the following code:

Person p = new Person("John", 30);
System.out.println("Name: " + p.getName());
System.out.println("Age: " + p.getAge());

This will create a new Person object with the name "John" and the age 30, and print the name and age to the console.