Constructor overloading in java

Constructor overloading:

• If one class has more than one constructor different parameters list called Constructor overloading.

Example program:

1. class StudentData

   {

      private int stuID;

      private String stuName;

      private int stuAge;

      StudentData()

      {

          //Default constructor

          stuID = 1001;

          stuName = "Sabrina";

          stuAge = 15;

      }

      StudentData(int num1, String str, int num2)

      {

          //Parameterized constructor

          stuID = num1;

          stuName = str;

          stuAge = num2;

      }

    

      public int getStuID() {

          return stuID;

      }

      public void setStuID(int stuID) {

          this.stuID = stuID;

      }

      public String getStuName() {

          return stuName;

      }

      public void setStuName(String stuName) {

          this.stuName = stuName;

      }

      public int getStuAge() {

          return stuAge;

      }

      public void setStuAge(int stuAge) {

          this.stuAge = stuAge;

      }

    

      public static void main(String args[])

      {

          //This object creation would call the default constructor

          StudentData obj = new StudentData();

          System.out.println("Values from Default constructor.....");

          System.out.println("Student Name is: "+obj.getStuName());

          System.out.println("Student Age is: "+obj.getStuAge());

          System.out.println("Student ID is: "+obj.getStuID());

    

          System.out.println("\nValues from Parameterized constructor.....");

          StudentData obj2 = new StudentData(2005, "Kurshitha", 18);

          System.out.println("Student Name is: "+obj2.getStuName());

          System.out.println("Student Age is: "+obj2.getStuAge());

          System.out.println("Student ID is: "+obj2.getStuID());

     }

   }

Output:

Note:

If you need details about this keyword then click the below link to detail learning.

https://www.whereisstuff.com/2020/11/use-of-this-keyword-in-java.html

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