请教大虾们:javax.swing.colorchooser 是怎么实现的啊~ 我在做一个Color Slide (颜色调节)的应用程序,就是移动red,green,blue三个Slider组件的时候,下面的颜色显示面板能够自动显示调节后的颜色,这样一种功能,大家帮帮忙啊,我已经做了很久了 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 Color color = new Color(red.getValue(), green.getValue(), blue.getValue());panel.setBackground(color); 那请问这个Slider的监听器怎么实现啊 已经解决,谢谢大家。import javax.swing.*;import javax.swing.event.*;import java.awt.*;import java.util.Hashtable;public class ColorSlide extends JFrame implements ChangeListener{ JLabel jl1; JLabel jl2; JLabel jl3; JLabel ja; JLabel jb; JLabel jc; JLabel jd; JLabel je; JLabel jf; Hashtable<Integer, JLabel> table; JSlider js1; JSlider js2; JSlider js3; JPanel redPanel; JPanel greenPanel; JPanel bluePanel; JPanel displayPanel; public ColorSlide (String s){ super(s); jl1=new JLabel("red:"); jl2=new JLabel("green:"); jl3=new JLabel("blue:"); ja=new JLabel("0"); jb=new JLabel("50"); jc=new JLabel("100"); jd=new JLabel("150"); je=new JLabel("200"); jf=new JLabel("250"); js1=new JSlider(0,250,0); js2=new JSlider(0,250,0); js3=new JSlider(0,250,0); table = new Hashtable<Integer, JLabel>(); table.put(0,ja); table.put(50,jb); table.put(100,jc); table.put(150,jd); table.put(200,je); table.put(250,jf); js1.setLabelTable(table); js1.setMajorTickSpacing(10); js1.setPaintLabels(true); js1.setPaintTicks(true); js2.setLabelTable(table); js2.setMajorTickSpacing(10); js2.setPaintLabels(true); js2.setPaintTicks(true); js3.setLabelTable(table); js3.setMajorTickSpacing(10); js3.setPaintLabels(true); js3.setPaintTicks(true); redPanel = new JPanel(new GridLayout(0,1)); greenPanel = new JPanel(new GridLayout(0,1)); bluePanel = new JPanel(new GridLayout(0,1)); displayPanel = new JPanel(); displayPanel.setBackground(Color.white); redPanel.add(jl1); redPanel.add(js1); greenPanel.add(jl2); greenPanel.add(js2); bluePanel.add(jl3); bluePanel.add(js3); js1.addChangeListener(this); js2.addChangeListener(this); js3.addChangeListener(this); Container c=getContentPane(); getContentPane().setLayout(new GridLayout(4,0)); getContentPane().add(redPanel); getContentPane().add(greenPanel); getContentPane().add(bluePanel); getContentPane().add(displayPanel); } public void stateChanged(ChangeEvent e){ displayPanel.setBackground(new Color(js1.getValue(),js2.getValue(),js3.getValue())); } public static void main(String[] args){ ColorSlide frame = new ColorSlide ("ColorSlide"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setVisible(true); }} 引用传递 和地址传递 有什么区别? 各位大哥帮帮忙!!! 求用Java写一道选择题的程序,包括单选和多选.谢谢! 线程互斥的问题 求一资料,给分 困难接踵而至-参数问题 关于null和空字符串的 菜鸟一问:如何区分编译错误和运行时错误? ie怎么显示不了我的gui 各位大虾,MM有难啊,帮帮忙! JBuilder中Integer q;Integer quantity;setQuantity(q-quantity);提示错误: 工作的 苦恼 JTabel.getCellEditor(int row, int col)中为什么参数row无用?
panel.setBackground(color);
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.util.Hashtable;public class ColorSlide extends JFrame implements ChangeListener{
JLabel jl1;
JLabel jl2;
JLabel jl3;
JLabel ja;
JLabel jb;
JLabel jc;
JLabel jd;
JLabel je;
JLabel jf;
Hashtable<Integer, JLabel> table;
JSlider js1;
JSlider js2;
JSlider js3;
JPanel redPanel;
JPanel greenPanel;
JPanel bluePanel;
JPanel displayPanel; public ColorSlide (String s){
super(s);
jl1=new JLabel("red:");
jl2=new JLabel("green:");
jl3=new JLabel("blue:");
ja=new JLabel("0");
jb=new JLabel("50");
jc=new JLabel("100");
jd=new JLabel("150");
je=new JLabel("200");
jf=new JLabel("250");
js1=new JSlider(0,250,0);
js2=new JSlider(0,250,0);
js3=new JSlider(0,250,0);
table = new Hashtable<Integer, JLabel>();
table.put(0,ja);
table.put(50,jb);
table.put(100,jc);
table.put(150,jd);
table.put(200,je);
table.put(250,jf);
js1.setLabelTable(table);
js1.setMajorTickSpacing(10);
js1.setPaintLabels(true);
js1.setPaintTicks(true);
js2.setLabelTable(table);
js2.setMajorTickSpacing(10);
js2.setPaintLabels(true);
js2.setPaintTicks(true);
js3.setLabelTable(table);
js3.setMajorTickSpacing(10);
js3.setPaintLabels(true);
js3.setPaintTicks(true);
redPanel = new JPanel(new GridLayout(0,1));
greenPanel = new JPanel(new GridLayout(0,1));
bluePanel = new JPanel(new GridLayout(0,1));
displayPanel = new JPanel();
displayPanel.setBackground(Color.white);
redPanel.add(jl1);
redPanel.add(js1);
greenPanel.add(jl2);
greenPanel.add(js2);
bluePanel.add(jl3);
bluePanel.add(js3);
js1.addChangeListener(this);
js2.addChangeListener(this);
js3.addChangeListener(this);
Container c=getContentPane();
getContentPane().setLayout(new GridLayout(4,0));
getContentPane().add(redPanel);
getContentPane().add(greenPanel);
getContentPane().add(bluePanel);
getContentPane().add(displayPanel);
}
public void stateChanged(ChangeEvent e){
displayPanel.setBackground(new Color(js1.getValue(),js2.getValue(),js3.getValue()));
}
public static void main(String[] args){
ColorSlide frame = new ColorSlide ("ColorSlide");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}