我剛剛作出了一個Java程序和Eclipse 變化Jprogress酒吧與JSlider的,但滑塊值不會改變它基本保持不變,這裏是代碼:JSlider的並沒有改變的值,並保持不變
第一類:
package pro;
import java.awt.Color;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
public class pro1 {
int value;
public static void main(String[] args) {
// TODO Auto-generated method stub
//setting the objects
final pro1 p = new pro1();
final pro2 p2 = new pro2();
//adding the JFrame.
JFrame fr = new JFrame();
fr.setVisible(true);
fr.setSize(380, 80);
fr.setLayout(new FlowLayout(FlowLayout.LEFT));
fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//adding the JProgressBar.
JProgressBar pb = new JProgressBar(0,100);
pb.setOpaque(false);
Color c = new Color (0,200,0);
pb.setForeground(c);
pb.setValue(p.value);
//adding the JPanel
JPanel panel = new JPanel();
panel.add(pb);
panel.add(p2.slider());
//adding the panel to the frame.
fr.add(panel);
fr.revalidate();
}
}
二等:
package pro;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class pro2 {
//setting the object
pro1 p = new pro1();
public JSlider slider(){
//adding the slider.
final JSlider s = new JSlider();
s.setMinimum(0);
s.setMaximum(100);
s.setValue(0);
s.setMajorTickSpacing(10);
s.setPaintTicks(true);
s.addChangeListener(new ChangeListener(){
@Override
public void stateChanged(ChangeEvent e) {
// TODO Auto-generated method stub
p.value = s.getValue();
}
});
return s;
}
我也嘗試將滑塊的值分配給一個值並將其打印出來,但它保持默認值,我將它設置爲0 ......
代碼中的任何錯誤的東西? ?
P1在Pro2的被引用自己的實例,它是不是什麼在屏幕上 – MadProgrammer