Can I call default constructor from parameterized constructor inside public class in java?

Question

I want to call default constructor from a parameterized constructor inside a public java class.

Can I achieve it?

Answer 1

You can just call default constructor with new operator (like this: new Test();) or this();. just Test() is forbidden because its not a method of class.

package org.gpowork.test;

public class Test {
    private String field;
    private Long time = 0L; 
    public Test(){
        this.time = System.currentTimeMillis();
        System.out.println("Default constructor. "+this.time);
    }
    public Test(String field){
            this();
        Test instance = new Test();
        this.field = field;
    }
    public static void main(String[] args){
        System.out.println("start...");
        Test t1 = new Test();
        System.out.println("-------");
        Test t2 = new Test("field1");
    }
}