Yes once constructor can call another constructor by using
the this() statement. Example:

class Account {
    private double balance;
    
    // 1st Constructor
    public Account( double initBalance ) {
        balance = initBalance;
    }

    // 2nd Constructor
    public Account() {
        this( 0.0 );    // call the 1st constructor
    }
}

And to call the constructor of some other class, use super()

We can call one of  base class constructor inside derive class constructor by using predefine variable "super()" such as super(a), super(a,b) and so on.

when i am tring above code getting following error
Can we call a constructor within a constructor?

Error:------------>
object.cpp: In constructor Account::Account():
object.cpp:15: error: this cannot be used as a function


#include<iostream.h>
class Account {
    private:
         double balance;

    // 1st Constructor
    public:
         Account( double initBalance ) {
                balance = initBalance;
        }

    // 2nd Constructor
    public:
        Account() {
        this( 0.0 );    // call the 1st constructor
        }
};

int main()
{
        Account a;
        return 0;
}

Error:------------>
object.cpp: In constructor Account::Account():
object.cpp:15: error: this cannot be used as a function

yes we can call by make use of this()

yes we can call by super() or this();

public abstract class Class1{
	
	public Class1(){
		System.out.println("Class1");
	}
}

public class Class2 extends Class1{
	
	public Class2(String Name){
		System.out.println("Name = " + Name);
	}
	
	public Class2(){
		this("AMIT"); // use only one this or super
		super();
	}
}