Constructor with no parameters

Question

Greetings,
What is a constructor with no parameters?
Just started on my new lab today and most of its going pretty good. Except I can't get the compiler to go past the first part...which pretty much hangs up the rest. My instructions are to create a constructor with no parameters, and after doing some research I thought I did that. Would someone mind taking at look at this and help me understand what I'm not doing? Thanks.
I'm only suppose to use the three variables that I've already put in, but the first constructor doesn't want to use any of those.
public class Time
    // instance variables
    private int hour;
    private int minutes;
    private int seconds;
     * Default constructor for objects of class Time.
    public Time()
        Time();
    }

Answer 1

public class Time {
    private int hour;
    private int minutes;
    private int seconds;
    // no constructor typed
    public static void main(String[] args) {
        Time t1 = new Time();  // OK
        Time t2 = new Time(5, 5, 5); // error
}This is Ok for t1 because if you do not provide a default (no args) constructor, one will be supplied when it compiles.
public class Time {
    private int hour;
    private int minutes;
    private int seconds;
    public Time(int h, int m, int s) {
    public static void main(String[] args) {
        Time t1 = new Time();  // error
        Time t2 = new Time(5, 5, 5); // OK
}Now ok for t2 since you have provided a constrcutor but not ok for t1 as the default constructor will not be provided for you. Default constructor only provided if you do not provide one.
public class Time {
    private int hour;
    private int minutes;
    private int seconds;
    public Time() {}
    public Time(int h, int m, int s) {
    public static void main(String[] args) {
        Time t1 = new Time();  // OK
        Time t2 = new Time(5, 5, 5); // OK
}Now both t1 and t2 are ok since both constructors are been supplied.