JAVA EXAMPLE PROGRAMS

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Java Parameterized Constructor Examples

  • Parameterized constructors are required to pass parameters on creation of objects.
  • If we define only parameterized constructors, then we cannot create an object with default constructor. This is because compiler will not create default constructor. You need to create default constructor explicitly.

Java Parameterized Constructor Sample Code

Code:
package com.myjava.constructors;

public class MyParameterizedConstructor {
    
    private String name;
    
    public MyParameterizedConstructor(String str){
        this.name = str;
        System.out.println("I am inside parameterized constructor.");
        System.out.println("The parameter value is: "+str);
    }
    
    public static void main(String a[]){
        MyParameterizedConstructor mpc = new MyParameterizedConstructor("Madhu Raj");
    }
}

Example Output

I am inside parameterized constructor.
The parameter value is: Madhu Raj

Other Constructor Examples

Knowledge Centre
ServletOuptputStream Vs PrintWriter
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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