JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS


Java Constructor Chaining Examples

Calling another constructor in the same class from another constructor is called constructor chaining. By using this() we can call another constructor in the same class. Incase we want to call another constructor, this() should be the first line in the constructor. Below example shows code for constructor chaining.

Java Constructor Chaining Sample Code

Code:
package com.myjava.constructors;

public class MyChaining {
    
    public MyChaining(){
        System.out.println("In default constructor...");
    }
    public MyChaining(int i){
        this();
        System.out.println("In single parameter constructor...");
    }
    public MyChaining(int i,int j){
        this(j);
        System.out.println("In double parameter constructor...");
    }
    
    public static void main(String a[]){
        MyChaining ch = new MyChaining(10,20);
    }
}

Example Output

In default constructor...
In single parameter constructor...
In double parameter constructor...

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Other Constructor Examples

Knowledge Center
Inner class and Anonymous class
Inner class: classes defined in other classes, including those defined in methods are called inner classes. An inner class can have any accessibility including private.

Anonymous class: Anonymous class is a class defined inside a method without a name and is instantiated and declared in the same place and cannot have explicit constructors.

About Author

My name is Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me at java2novice@gmail.com or you can comment on the page.

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Reference: Java™ Platform Standard Ed. 6 - API Specification | Java is registered trademark of Oracle.
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