When I call the constructor in the main program, the default values are getting displayed. I want the values initialized in the default Constructor(). Why constructor overloading is not happening when I explicitly define the default constructor. How do I call them in the main program?

Code:
`

package Constructors;

public class Constructor {
    
    
    //Bank HDFC has few fields to be declared  
    public String customerName;
    public int age;
    private long adharNumber;
    protected long accountNumber;
    protected double bankBalance;
    short birthDate;
    String birthMonth;
    int BirthYear;
    public short branchCode;
    public String IFSCCode;
    public String branchLocation;
    
    Constructor()
    {
        branchCode=20;
        IFSCCode="HDFC000003";
        branchLocation="Bengaluru";
        customerName="Harish";
        adharNumber=12456789;
        bankBalance=1200.56;
        birthDate=20;
        birthMonth="OCT";
        BirthYear=1994;
        
    }
    
    public void callConstructor()
    {
        branchCode=20;
    
    }
    
    public Constructor(long accountNumber,int age)
    {
        this.accountNumber=accountNumber;
        this.age=age;
        System.out.println("Details of "+accountNumber+" are as follow:");
    }

    
    public void getProtected()
    {
        System.out.println("bankBalance: "+bankBalance);
    }
    public void getPrivate(long adharNumber)
    {
        this.adharNumber=adharNumber;
        System.out.println("adharNumber :"+adharNumber);
        
    }
    public void getPublic()
    {
        System.out.println("customerName :"+customerName);
        System.out.println("branchCode :"+branchCode);
        System.out.println("IFSCCode :"+IFSCCode);
        System.out.println("branchLocation :"+branchLocation);
        
    }`your text`
    public void getDefault()
    {
        System.out.println("birthDate :"+birthDate);
        System.out.println("birthMonth :"+birthMonth);
        System.out.println("BirthYear :"+birthMonth);
    }

    public long getAdharNumber() 
    {
        return adharNumber;
    }
}


public class ConstructorTest {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        
        Constructor c=new Constructor(22334455,29);
        new Constructor();
        c.getPublic();
        c.getProtected();
        c.getDefault();
        c.getPrivate(0);

    }

}`

What mistake I am making? Please correct me. I am new learner of JAVA

Expected o/p:

customerName :Harish
branchCode :20
IFSCCode :HDFC000003
branchLocation :Bengaluru
bankBalance: 1200.56
birthDate :20
birthMonth :OCT
BirthYear :1994
adharNumber :12456789

Actual O/p:
Details of 22334455 are as follow:
customerName :null
branchCode :0
IFSCCode :null
branchLocation :null
bankBalance: 0.0
birthDate :0
birthMonth :null
BirthYear :null
adharNumber :0