JAVA EXAMPLE PROGRAMS

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

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Knowledge Centre
Procedural Vs Object-oriented Programs
In procedural program, programming logic follows certain procedures and the instructions are executed one after another. In OOP program, unit of program is object, which is nothing but combination of data and code.

In procedural program, data is exposed to the whole program whereas in OOPs program, it is accessible with in the object and which in turn assures the security of the code.

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