How to make a clock in Java?

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I am new to Stack Overflow and also new to Java. I am trying to make a clock in order to practice/reinforce my skills. Here is what my problem is:

I have made a class, TimeComponents, in which I have my source code for actually making the clock work. I am trying to figure out how to actually display my clock in my main class, TimeViewer. (Hopefully I am phrasing this correctly).

Here is the code:

public class TimeComponents {
	
	public int seconds;
	public int minutes;
	public int hours;
	
	public TimeComponents(int initialHour, int initialMinutes, int initialSeconds){
		initialSeconds = 0;
		initialMinutes = 0;
		initialHour = 0;
		
	}
	public void Tick(){
		seconds = seconds ++;
		if(seconds == 60){
			minutes ++;
			seconds = 0;
			if(minutes == 60){
				hours ++;
				minutes = 0;
			}
		}
	}
	
	
		
}
		

It is hard to tell what your question actually is, but this line:

seconds = seconds ++;

will NOT increment seconds. I have tried it:

    int seconds = 0;
    seconds = seconds++;
    System.out.println(seconds);

prints 0.

The reason is that the ++ suffix applies the increment AFTER assigning the value to the variable, so you lose the increment.

Try simply

seconds++;

How to make a clock in Java?, Step 4: Calculate the seconds, minutes and hours coordinates from the current time by getting the system time. Clock system () Method in Java with Examples java.time.Clock.system (ZoneId zone) method is a static method of Clock class which returns a clock that returns the current instant of the clock using best available system clock with ZoneID of the returned clock is set to the ZoneID passed.

You could just make a toString function in your Time function. It makes a string with the 3 integers and you can print it in your main.

code TimeViewer:

public String toString(){
  return hours + ":" + minutes + ":" + seconds
}

code Main:

TimeComponent timecomponent  = new TimeComponent(0, 0, 0);
System.out.println(timecomponent);

I watched your code and it seems like your doing something weard in the constructor not linking with the class data (initial).

How To Create a Simple Clock in Java, It is hard to tell what your question actually is, but this line: seconds = seconds ++;​. will NOT increment seconds. I have tried it: int seconds = 0; seconds  To start the timer, setTimeout () method is used which takes the function currentTime () as the first argument and the time (in milliseconds) after which you wish to call the function as the second argument. In our case, the function is called after every 1000 milliseconds.

I'm not quite sure what you're asking for specifically, but you asked for help generally, and I see a couple issues with your code that I can help with.

Your main method is empty, so nothing will happen when you run your code. Try to create an instance of TimeComponent in your main method, and call Tick() with it to see what happens.

In the constructor of your TimeComponents class, you have set your inputs "initialHour, initialMinutes, and initialSeconds" equal to zero. This does not declare your "minutes, seconds, and hours" variables, and will result in an error when you run your Tick() method. In your constructor, try setting each of these variables equal to your corresponding input variables to avoid this, like so:

    public TimeComponents(int initialHour, int initialMinutes, int initialSeconds){
            seconds = initialSeconds;
            minutes = initialMinutes;
            hours = initialHours;
    }

To increment using the ++ operator, it won't work unless you put the ++ right next to the name of the variable you want to increment, like so:

    hours++;

I hope this helped you solve your problem. Good luck!

Guide to the Java Clock Class, The Clock class is abstract, so we cannot create an instance of it. The following factory methods can be used: offset(Clock, Duration) – returns a  Hey Alien, welcome to practice house. in this post we will learn how to create an analog clock in java using java applet. This program will help you understand about a logic that clock use and you will learn about thread. It’s just a fun project you can do and show to your friend that you did it. Customize a little bit and have fun.

I hope this might help you. And sorry if you think there are some extra variables. They actually are used by me to implement a analog clock which I am trying right now.

import java.util.*;
public class Date_inner
{
    //on May 04 09:51:52 CDT 2009
    String date,time;
    int hh,mm,ss;
    void getData()
    {
            Date dat=new Date();
            String str=dat.toString();
            date=str.substring(7,10)+str.substring(3,7)+str.substring(23,28);
            hh=Integer.parseInt(str.substring(11,13));
            mm=Integer.parseInt(str.substring(14,16));
            ss=Integer.parseInt(str.substring(17,19));
            numtostring(hh,mm,ss);
    }
    void numtostring(int hh,int mm,int ss)
    {
         time=texttowords(hh)+"Hours "+texttowords(mm)+"Minutes "+texttowords(ss)+"Seconds ";
    }
    String texttowords(int num)
    {
        String arr[]={"One ","Two ","Three ","Four ","Five ","Six ","Seven ","Eight ","Nine ","Ten ","Eleven ","Twelve ","Thirteen ","Fourteen ","Fifteen ","Sixteen ","Seventeen ","Eighteen ","Nineteen ","Twenty ","Thirty ","Fourty ","Fifty "};
        if(num<=20)
            return arr[num-1];
        else if(num>20&&num<59)
        {
            return (arr[(num/10)+17]+arr[(num%10)-1]);
        }
        else
        {
            return "Error";
        }
    }
    void main()
    {
        getData();
        System.out.println(date);
        System.out.println(time);
    }
}

Clock system() Method in Java with Examples, Java program to demonstrate. // system(ZoneId) method of Clock class. import java.time.*;. // create class. public class systemMethodDemo {. Step 1: Import the necessary packages. import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import Step 2: Define a variable and make the object of the SimpleDate format class. Here the xcenter and ycenter variables are Step 3: We are creating a structured method for the

Here is a simple clock.

package myclock;
public class Clock 
{
public int hours; 
public int minutes;
public int seconds;
public Clock()
{
  hours=12;
  minutes=0;
  seconds=0;
}
public Clock(int hours, int minutes, int seconds)
{
this.hours=hours;
this.minutes=minutes;
this.seconds=seconds;
}
public Clock(int seconds)
{
 this.seconds=seconds%60;
 hours=seconds/60;
 this.minutes=hours%60;//minutes
 this.hours=hours/60;//hours
}
public void setClock(int seconds)
{
this.seconds=seconds;
}
public int getHours()
{
return this.hours;
}
public int getMinutes()
{
return this.minutes;
}
public int getSeconds()
{
return this.seconds;
}
public void setHours(int hours)
{
  this.hours=hours;
}
public void setMinutes()
{
  this.minutes=minutes;
}
public void setSeconds()
{
  this.seconds=seconds;
}
public void tick()
{
this.seconds++;
}
public void tickDown()
{
this.seconds--;
}

public String toString()
{
return "("+String.format("%02d",this.hours)+":"+String.format("%02d",this.minutes)+":"+String.format("%02d",this.seconds)+")";
}

}

Then the implementation class will look like this.

package myclock;
public class MyClock 
{
public static void main(String[] args) 
{
    Clock firstClock=new Clock(3602);//this is if you want to parse in seconds
    System.out.println(firstClock.toString()+"\n");
    Clock secondClock=new Clock(2,45,45);//this is if you want to parse in hours, minutes and seconds
    System.out.println(secondClock.toString());
    for(int i=0;i<10;i++)
    {
    firstClock.tick();
    System.out.println(firstClock.toString());
    }
}

}

How to Create a Digital Clock in Java, Java users can construct visual, event-driven programs like digital clocks using only a few simple commands. Java programmers have a plethora of components​  Clock clock = Clock.systemDefaultZone(); System.out.println(clock); The above lines produce the following result (assuming our default time zone is “Asia/Calcutta”): SystemClock[Asia/Calcutta]

Java Clock, It is used to get the time-zone being used to create dates and times. abstract Instant instant(), It is used to get the current instant of the clock. static  I've gotten it completed however I think my code is eating away at memory, after I left it over night I came back to 1.4GB of memory being used and a large amount of the CPU being used. I'm new to Java programming so I'm hoping this isn't normal! In my main thread I create a new Calendar object each run.

Programming a simple clock, java datetime. Here's the start of some code for a clock that can display time in 24 and 12 hours. What could be added to it? How could I can 

How to construct an analog clock with Java, The graphics class of Java is used to create a line and oval and color of the hands. In the process of creating the analog clock, we need to follow a step by step 

Comments
  • What is your question?
  • Your main method is empty, what are you expecting to happen in an empty main method?
  • "make a clock" doesn’t tell us much. Did you want to print it on the console? Did you want it to be in a window? If the latter, is it digital (03:00) or analog (🕒)? If the former, did you intend to make it always print on the same line?