Я заметил, что в моей программе есть утечка памяти.
Я отследил проблему до линии.
Clock.setText("" + h + ":" + df.format(m) + ":" + df.format(s));
Я гуглил это, и, похоже, это общая проблема, но я не нашел ответа.
Кто-нибудь знает исправление?
Вот весь код:
package CodeBits;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
public class Countdown {
private JFrame Timer;
private JTextField Clock;
private JLabel label;
private JLabel label_1;
static Calendar calendar = new GregorianCalendar();
int minutes = 90;
int count = minutes * 60;
int h;
int m;
int s;
javax.swing.Timer refreshTimer;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Countdown window = new Countdown();
window.Timer.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public Countdown() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
Timer = new JFrame();
Timer.getContentPane().setBackground(new Color(173, 216, 230));
Timer.setBounds(0, 0, 135, 100);
Timer.setTitle("Aero Software");
Timer.setIconImage(Toolkit.getDefaultToolkit().getImage("Files/Icon.jpg"));
Timer.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[]{0, 0, 0, 0, 0, 0};
gridBagLayout.rowHeights = new int[]{0, 0, 0, 0, 0, 0, 0, 0};
gridBagLayout.columnWeights = new double[]{0.0, 0.0, 1.0, 1.0, 0.0, Double.MIN_VALUE};
gridBagLayout.rowWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
Timer.getContentPane().setLayout(gridBagLayout);
label = new JLabel(" ");
GridBagConstraints gbc_label = new GridBagConstraints();
gbc_label.insets = new Insets(0, 0, 5, 5);
gbc_label.gridx = 0;
gbc_label.gridy = 1;
Timer.getContentPane().add(label, gbc_label);
JLabel lblNewLabel = new JLabel("Countdown Timer");
GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();
gbc_lblNewLabel.gridwidth = 4;
gbc_lblNewLabel.insets = new Insets(0, 0, 5, 0);
gbc_lblNewLabel.gridx = 1;
gbc_lblNewLabel.gridy = 1;
Timer.getContentPane().add(lblNewLabel, gbc_lblNewLabel);
Clock = new JTextField();
Clock.setFont(new Font("Arial", Font.BOLD, 22));
Clock.setHorizontalAlignment(JLabel.CENTER);
GridBagConstraints gbc_Clock = new GridBagConstraints();
gbc_Clock.fill = GridBagConstraints.HORIZONTAL;
gbc_Clock.gridwidth = 3;
gbc_Clock.insets = new Insets(0, 0, 5, 5);
gbc_Clock.gridx = 1;
gbc_Clock.gridy = 2;
Timer.getContentPane().add(Clock, gbc_Clock);
Clock.setColumns(10);
label_1 = new JLabel(" ");
GridBagConstraints gbc_label_1 = new GridBagConstraints();
gbc_label_1.insets = new Insets(0, 0, 5, 0);
gbc_label_1.gridx = 4;
gbc_label_1.gridy = 2;
Timer.getContentPane().add(label_1, gbc_label_1);
// Create countdown timer
ActionListener refreshListener = new ActionListener() {
// Ensure time is fotmatted as 7:04 not 7:4
DecimalFormat df = new DecimalFormat("00");
Calendar countdown = calendar;
{
// Zero the time and add the number of minutes to countdown from
countdown.set(Calendar.HOUR, 0);
countdown.set(Calendar.MINUTE, 0);
countdown.set(Calendar.SECOND, 0);
countdown.set(Calendar.MINUTE, 0);
countdown.add(Calendar.MINUTE, minutes);
}
// Start the timer
public void actionPerformed(ActionEvent e) {
h = countdown.get(Calendar.HOUR_OF_DAY);
m = countdown.get(Calendar.MINUTE);
s = countdown.get(Calendar.SECOND);
calendar.add(Calendar.SECOND, -1);
Clock.setText("" + h + ":" + df.format(m) + ":" + df.format(s));
count--;
if (count == 0) {
System.out.println("Time is up!");
refreshTimer.stop();
}
}
};
refreshTimer = new javax.swing.Timer(1000, refreshListener);
refreshTimer.setInitialDelay(0);
refreshTimer.start();
}
}