Thread: TIMER HELP PLEASE

can you help me guys . i have a project and it a microwave . so i need a timer that countdown . can you help me and explain please ?

Sorry about that. Post is now separated into its own thread.

Since you're building a GUI, and I assume it will be Swing, then have you reviewed Oracle's tutorial on javax.swing.Timer? If not, I recommend you review that and create a small app that displays a countdown or something using a timer. Come back with that code when you need help.

guys , i want to ask something about UI swing . well it is about TIMER or COUNTDOWN . well i think everybody knows OVEN right . theres a TIMER or a COUNTDOWN . how will i apply it to my UI swing ? help anyone please . TNX .

Threads merged.

yeah like this . 00:00:00 then it will countdown

never tried anything yet . well i dont know where to start . but this is the only problem now the timer . is there a java code for that like .isDone(); like this ?

can you explain it basically sir ?

DONE ! how about the timer HH:MM:SS

this is my code.

import java.awt.*;
import java.util.Date;
 
import javax.swing.*;
 
import java.awt.BorderLayout;
 
import java.awt.Dimension;
import java.awt.event.*;
 
 
public class MicroWave extends JFrame implements ActionListener {
 
 
 
		  JButton n0,n1,n2,n3,n4;
		  JButton n5,n6,n7,n8,n9;
		  JButton start,stop;
		   JPanel keyButtons;
 
		  JPanel South;
		  JPanel North;
		  JPanel West;
		  JPanel East;
		  JPanel time;
		Timer starter;
		  JTextField screen;
 
			  long cd = 1800000; 
			   java.text.SimpleDateFormat tformat = new java.text.SimpleDateFormat("hh:mm:ss");  
			     JTextField timer = new JTextField(tformat.format(new Date(cd)),JTextField.CENTER);  
 
			public void actionPerformed(ActionEvent arg0) {
 
				if(timer.getText().equals("00:00:00"))
				{
					timer.setText("");
					JButton source = (JButton)arg0.getSource();
					timer.replaceSelection(arg0.getActionCommand());
				}
				else{
					JButton source = (JButton)arg0.getSource();
					timer.replaceSelection(arg0.getActionCommand());
				}
 
				 if(arg0.getSource().equals(start)){
				 ActionListener al = new ActionListener(){  
				      long x = cd - 1000;  
				      public void actionPerformed(ActionEvent ae){ 
 
 
				    	  timer.setText(tformat.format(new Date(x)));  
				          x -= 1000;}};  
				     starter = new Timer(1000, al);
				     starter.start();  
				      }if(arg0.getSource().equals(stop)){
				    	  starter.stop();
				    	  timer.setText("00:00:00");
				      }
			}
 
		public MicroWave(){
 
 
 
 
 
 
		n1 = new JButton("1"); 	
		n2 = new JButton("2"); 
		n3 = new JButton("3"); 
		n4 = new JButton("4"); 
		n5 = new JButton("5"); 
		n6 = new JButton("6"); 
		n7 = new JButton("7"); 
		n8 = new JButton("8"); 
		n9 = new JButton("9"); 
		start = new JButton("START"); 
		n0 = new JButton("0"); 
		stop = new JButton("STOP"); 
 
		North= new JPanel(new BorderLayout(260,0));
		South= new JPanel(new FlowLayout(FlowLayout.RIGHT));
		West = new JPanel(new FlowLayout(FlowLayout.LEFT));
		East = new JPanel(new FlowLayout(FlowLayout.RIGHT));
 
 
		keyButtons = new JPanel();
 
		time = new JPanel();
		screen = new JTextField("SCREEN");
 
 
 
 
		West.add(screen);
		time.add(timer);
 
		North.add(time,BorderLayout.EAST);
		South = new JPanel();
 
	}
 
		public void launchFrame(){
 
			keyButtons.setLayout(new GridLayout(4,3));
			timer.setText("00:00:00");
			South.setPreferredSize(new Dimension(100,100));
			screen.setPreferredSize(new Dimension(440,700));
			timer.setPreferredSize(new Dimension(227,70));
			keyButtons.setPreferredSize(new Dimension(235,250));
			screen.add(new JTextField(8));
			//INPUT WILL START AT THE CENTER
			 timer.setHorizontalAlignment(JTextField.CENTER);
			 screen.setHorizontalAlignment(JTextField.CENTER);
			 //COLOR FOR JTEXTFIELD BACKGROUND//
			 timer.setBackground(Color.DARK_GRAY); 
			 screen.setBackground(Color.DARK_GRAY); 
			 //FONT COLOR //
			 screen.setForeground(Color.RED);  
			 timer.setForeground(Color.RED);
			 //FONT SIZE//
				screen.setFont(new Font("Tahoma",1,55));
				timer.setFont(new Font("BOLD",1,35));
 
			keyButtons.add(n1);
			keyButtons.add(n2);
			keyButtons.add(n3);
			keyButtons.add(n4);
			keyButtons.add(n5);
			keyButtons.add(n6);
			keyButtons.add(n7);
			keyButtons.add(n8);
			keyButtons.add(n9);
			keyButtons.add(start);
			keyButtons.add(n0);
			keyButtons.add(stop);
 
 
 
 
 
			n1.addActionListener(this);
			n2.addActionListener(this);
			n3.addActionListener(this);
			n4.addActionListener(this);
			n5.addActionListener(this);
			n6.addActionListener(this);
			n7.addActionListener(this);
			n8.addActionListener(this);
			n9.addActionListener(this);
			n0.addActionListener(this);
			start.addActionListener(this);
			stop.addActionListener(this);
 
 
 
 
 
 
			JFrame dos = new JFrame();
			dos.setSize(700,500);
			dos.add(keyButtons,BorderLayout.EAST);
 
			dos.add(screen,BorderLayout.WEST);
 
			dos.add(North,BorderLayout.NORTH);
			dos.add(South,BorderLayout.SOUTH);
			dos.setVisible(true);
			dos.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
 
 
		}
 
 
		public static void main (String args[]){
			MicroWave GUI = new MicroWave();
			GUI.launchFrame();
 
 
 
 
 
 
		}
 
 
 
 
}

what should i do . so if ever i click ANY OF THE JBUTTON NUMBERS the "00:00:00" the COLON STILL APPEARS . WHAT SHOULD I ADD TO MY PROGRAM ANY SUGGESTION GUYS ?? HELP PLEASE

im trying to do this "00:00:00" while i input numbers the colon " : " still appears every time i input numbers

have you tried to run my program ?? well by the way what im trying to do is if i will input numbers the colon should appear to . but the problem is when i input numbers it will go straight EXAMPLE (123133) it should appear to be like this("12:31:33") everytime i will input numbers .

Threads merged and moved.

Please do not start multiple threads on the same topic. Keep this one going until solved or a significantly different topic must be addressed.

Originally Posted by KevinWorkman

I have run your code.

Where are you doing the formatting of the text so that it includes colons?

none . thats why i post this thread to ask . can you help me ??