JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Constructor Overloading Examples

Like method overloading we can overload constructors also. Along with default constructor, we can have constructors with parameters. The no of parameters can be same, and it can have different datatypes. Below example gives sample code for constructors overloading.

Java Constructor Overloading Sample Code

Code:
package com.myjava.constructors;

public class MyOverloading {
    
    public MyOverloading(){
        System.out.println("Inside default constructor");
    }
    public MyOverloading(int i){
        System.out.println("Inside single parameter constructor with int value");
    }
    public MyOverloading(String str){
        System.out.println("Inside single parameter constructor with String object");
    }
    public MyOverloading(int i, int j){
        System.out.println("Inside double parameter constructor");
    }
    
    public static void main(String a[]){
        MyOverloading mco = new MyOverloading();
        MyOverloading spmco = new MyOverloading(10);
        MyOverloading dpmco = new MyOverloading(10,20);
	MyOverloading dpmco = new MyOverloading("java2novice");
    }
}

Example Output

Inside default constructor
Inside single parameter constructor with int value
Inside double parameter constructor
Inside single parameter constructor with String object

Other Constructor Examples

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ServletOutputStream: ServletResponse.getOutputStream() returns a ServletOutputStream suitable for writing binary data in the response. The servlet container does not encode the binary data, it sends the raw data as it is.

PrintWriter: ServletResponse.getWriter() returns PrintWriter object which sends character text to the client. The PrintWriter uses the character encoding returned by getCharacterEncoding(). If the response's character encoding has not been specified then it does default character encoding.
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About Author

I'm 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 to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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