public class Temp_sim implements Runnable {
private double temperature = 21.0;
private double set_temp = 21.0;
private long sleeptime = 100;
@Override
public void run() {
while(true){
if(temperature <= set_temp)
{
temperature = temperature +0.1;
}
else if(temperature > set_temp)
{
new Runnable(){
@Override
public void run() {
for(double i = 0.0; i < 2.0;i = i+0.05)
{
temperature = temperature -0.05;
// System.out.println("Temperature is: \t"+temperature);
try {
Thread.sleep(sleeptime);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}.run();
}
// System.out.println("Temperature is: \t"+temperature);
try {
Thread.sleep(sleeptime);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public double getTemperature() {
return temperature;
}
public void setTemperature(double current_temp) {
this.set_temp = current_temp +1;
}
public double getSetTemp(){
return set_temp;
}
}
在这个类中，我有一个模拟温度为双精度的线程，然后我使用 start 并在另一个类中使用该线程：
@SuppressWarnings("serial")
public class Temperature_GUI extends JFrame {
private JPanel contentPane;
private JTextField textField;
private TimeSeries series;
private Timer timer = new Timer(250, new tempListener());
Temp_sim temp = new Temp_sim();
Thread thread = new Thread(temp);
private JTextField textField_1;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Temperature_GUI frame = new Temperature_GUI();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
@SuppressWarnings("deprecation")
public Temperature_GUI() {
thread.start();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 1150, 600);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel Button_Panel = new JPanel();
contentPane.add(Button_Panel, BorderLayout.EAST);
Button_Panel.setLayout(new BorderLayout(0, 0));
JPanel panel = new JPanel();
Button_Panel.add(panel, BorderLayout.NORTH);
panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
JPanel panel_1 = new JPanel();
panel.add(panel_1);
JButton btnUp = new JButton("Up");
panel_1.add(btnUp);
btnUp.addActionListener(new BtnUpActionListener());
btnUp.setPreferredSize(new Dimension(150, 105));
textField = new JTextField();
Font font = new Font("Tahoma",Font.PLAIN,30);
textField.setText(String.valueOf(temp.getSetTemp())+" \u2103");
textField.setEditable(false);
textField.setPreferredSize(new Dimension(95,95));
textField.setFont(font);
textField.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
panel.add(textField);
textField.setColumns(10);
JPanel panel_2 = new JPanel();
panel.add(panel_2);
JButton btnDown = new JButton("Down");
panel_2.add(btnDown);
btnDown.addActionListener(new BtnDownActionListener());
btnDown.setPreferredSize(new Dimension(150, 105));
JLabel lblCurrentTemperature = new JLabel("current temperature:");
panel.add(lblCurrentTemperature);
this.textField_1 = new JTextField();
panel.add(this.textField_1);
this.textField_1.setColumns(10);
final Timer updater = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent e) {
DecimalFormat df = new DecimalFormat("##.00");
String getTemp = df.format(temp.getTemperature());
textField_1.setText(getTemp+" \u2103");
}
});
this.textField_1.setEditable(false);
JPanel panel_3 = new JPanel();
Button_Panel.add(panel_3, BorderLayout.SOUTH);
JButton btnReturn = new JButton("Return");
btnReturn.addActionListener(new BtnReturnActionListener());
btnReturn.setPreferredSize(new Dimension(150, 105));
panel_3.add(btnReturn);
updater.start();
JPanel center = new JPanel();
contentPane.add(center, BorderLayout.CENTER);
this.series = new TimeSeries("Temperature", Millisecond.class);
final TimeSeriesCollection dataset = new TimeSeriesCollection(this.series);
final JFreeChart chart = createChart(dataset);
timer.setInitialDelay(1000);
chart.setBackgroundPaint(Color.LIGHT_GRAY);
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(800, 500));
center.add(chartPanel);
timer.start();
}
private JFreeChart createChart(final XYDataset dataset) {
final JFreeChart result = ChartFactory.createTimeSeriesChart(
"Temperature Component",
"Time",
"Temperature"+" ("+"\u2103"+")",
dataset,
true,
true,
false
);
final XYPlot plot = result.getXYPlot();
plot.setBackgroundPaint(new Color(0xffffe0));
plot.setDomainGridlinesVisible(true);
plot.setDomainGridlinePaint(Color.lightGray);
plot.setRangeGridlinesVisible(true);
plot.setRangeGridlinePaint(Color.lightGray);
ValueAxis xaxis = plot.getDomainAxis();
xaxis.setAutoRange(true);
//Domain axis would show data of 60 seconds for a time
xaxis.setFixedAutoRange(60000.0); // 60 seconds
xaxis.setVerticalTickLabels(true);
ValueAxis yaxis = plot.getRangeAxis();
yaxis.setRange(0.0, 50.0);
return result;
}
private class tempListener implements ActionListener{
double lastValue;
public void actionPerformed(ActionEvent e) {
this.lastValue = temp.getTemperature();
final Millisecond now = new Millisecond();
// this.series.add(new Millisecond(), this.lastValue);
series.addOrUpdate(now, lastValue);
}
}
private class BtnUpActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
double current_temp = Double.valueOf(textField.getText().substring(0, 3)) +1.0;
temp.setTemperature(current_temp);
textField.setText(String.valueOf(current_temp)+" \u2103");
}
}
private class BtnDownActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
double current_temp = Double.valueOf(textField.getText().substring(0, 3)) -1.0;
temp.setTemperature(current_temp);
textField.setText(String.valueOf(current_temp)+" \u2103");
}
}
private class BtnReturnActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
setVisible(false);
}
}
}
现在，百万美元的问题！我有另一个类（如果你愿意，可以在 GUI 之间进行其他模拟的导航器）
而且我需要读取与此启动线程相同的数据，但是如何在不实例化新线程的情况下做到这一点？这几天一直困扰着我。