javagui图形界面编程（JAVA程序设计，使用GUI界面）

本文目录

• JAVA程序设计，使用GUI界面
• JAVA 编写一个java图形GUI程序，比较大小数并输出
• GUI画图板（绘图板）设计，用Java编写程序代码！！谢谢！！
• 用Java设计一个图形界面（GUI）的计算器应用程序，完成简单的算术运算
• 如何用JavaGUI设计QQ那样的界面
• 怎样用JAVA的GUI（图形用户界面）来设计一个程序！求程序和详解

JAVA程序设计，使用GUI界面

效果图

参考代码

import java.awt.*;import java.awt.event.*;import javax.swing.*;public class KeyFrame extends JFrame implements KeyListener{JLabel jlkey;public KeyFrame() {jlkey = new JLabel("请输入字母或者数字，其他字符不显示");add(jlkey);addKeyListener(this);setLayout(new FlowLayout());setSize(260, 160);setTitle("输入...");setLocationRelativeTo(null);setDefaultCloseOperation(EXIT_ON_CLOSE);setVisible(true);}public static void main(String args) {new KeyFrame();}public void keyTyped(KeyEvent e) {//敲击键盘c=e.getKeyChar();//得到键入的字符repaint();//重绘}public void keyPressed(KeyEvent e) {//按下键盘//c=e.getKeyChar();//repaint();}public void keyReleased(KeyEvent e) {//释放键盘}char c ;@Overridepublic void paint(Graphics g) {super.paint(g);//如果只能显示输入的是字母或者数字，那么需要if判断下if((c《=’Z’&& c》=’A’)||(c《=’z’&&c》=’a’)||(c《=’9’&&c》=’0’)){// 注意比较的是字符 ’9’ 和字符’0’Font font = g.getFont();g.setColor(Color.BLUE);g.setFont(new Font(font.getName(),font.getStyle(),20));g.drawString(c+"",100, 100);//绘制}}}

JAVA 编写一个java图形GUI程序，比较大小数并输出

1.首先定义三个输入框 JTextField firstNumber; JTextField secontdNumber; JTextField maxNumber;2.然后怎样生成并把它们放到界面上我就不多说了。3.接下来生成最大数按钮maxNumberButton和关闭按钮closeButton,并放在界面上。 然后让maxnNumberButton监听鼠标单击事件 maxNumberButton.addMouseListener(new MouseAdapter() { if (SwingUtilities.isLeftMouseButton(e)) {//判断是否鼠标左键按下 //在这里获得第一个和第二个数并比较获得最大的数，当然，你还可以首先判断是否已经输入了两个数,判断输入的两个值是否是数值等等的。你也可以在外边实现一个方法，直接返回最大值。然后是把最大值显示出来。 //从输入框直接获得的是string,你要自己转换成数值，具体怎样做我就不说了。默认你已经获得了两个值，并得到最大值max，顺便说一下float和double是不能直接大于小于这样比较的。 maxNumber.setText("");//首先把之前显示的清除 maxNumber.setText(max); } }); 关闭按钮处理类似 closeButton.addMouseListener(new MouseAdapter() { if (SwingUtilities.isLeftMouseButton(e)) { System.exit(0); }});

GUI画图板（绘图板）设计，用Java编写程序代码！！谢谢！！

只有矩形有圆形能移动，其它实现起来麻烦点，办法有的只是代码太多。画圆弧改成了画曲线，圆弧稍麻烦，当然方法是很简单的，你可以自己思考一下。双击13个颜色中的任意一个都会弹出颜色选择器。有保存与打开功能。扩展名请用 .jdr基本满足条件，细节可能不是很好，另，代码比较乱，怕不好看懂咯，呼呼。import java.awt.*;import java.awt.event.*;import java.awt.geom.*;import java.awt.image.BufferedImage;import java.io.*;import java.util.ArrayList;import javax.swing.*;import javax.swing.filechooser.FileNameExtensionFilter;public class JDraw { public static void main(String args) { JFrame f=new JFrame(); f.setDefaultCloseOperation(3); f.setSize(880,600); f.setLocationRelativeTo(null); f.getContentPane().add(M.c); f.getContentPane().add(M.m,"South"); f.setVisible(true); }}class CVS extends Component implements ComponentListener,MouseListener,MouseMotionListener{ public void componentHidden(ComponentEvent e) {} public void componentMoved(ComponentEvent e) {} public void componentResized(ComponentEvent e) {resized();} public void componentShown(ComponentEvent e) {} private void resized() { int w=this.getWidth(); int h=this.getHeight(); tbuff=new BufferedImage(w,h,3); makeBuff(w,h); } private void makeBuff(int w,int h) { Graphics g = tbuff.getGraphics(); g.drawImage(buff,0,0,null); g.dispose(); buff=new BufferedImage(w,h,3); g=buff.getGraphics(); g.drawImage(tbuff,0,0,null); g.dispose(); } BufferedImage buff,tbuff; CVS(){ this.addComponentListener(this); this.addMouseListener(this); this.addMouseMotionListener(this); buff=new BufferedImage(1,1,3); } public void paint(Graphics gr){ Graphics2D g = buff.createGraphics(); g.setBackground(new Color(0xff000000,true)); g.clearRect(0,0,getWidth(),getHeight()); g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); M.sa.drawAll(g); if(M.ts!=null) M.ts.draw(g); g.dispose(); gr.drawImage(buff,0,0,this); gr.dispose(); } public void mouseClicked(MouseEvent e) {} public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} public void mousePressed(MouseEvent e) { M.mp(e.getPoint()); } public void mouseReleased(MouseEvent e) { M.mr(e.getPoint()); } public void mouseDragged(MouseEvent e) { M.md(e.getPoint()); } public void mouseMoved(MouseEvent e) {}}class Menu extends JComponent implements MouseListener,ActionListener{ JComboBox sbox,method; CLabel cl; JCheckBox fillC,drawB; JRadioButton fc,bc; ButtonGroup bg; JButton clear,up,down,save,load; Menu(){ this.setLayout(new FlowLayout()); method=new JComboBox(new Object{"draw","move","erase",}); add(method); sbox=new JComboBox(new Object{"Pt","Ln","Rect","Cir","Arc",}); add(sbox); cl=new CLabel; for(int i=0; i《cl.length; i++){ cl=new CLabel(); cl.addMouseListener(this); add(cl); } fc=new JRadioButton("fc",true); bc=new JRadioButton("bc"); bg=new ButtonGroup(); bg.add(fc);bg.add(bc); add(fc);add(bc); fc.setOpaque(true); bc.setOpaque(true); fc.setBackground(Color.white); bc.setBackground(Color.blue); fillC=new JCheckBox("Fill",true); drawB=new JCheckBox("Draw",true); fillC.addActionListener(this); drawB.addActionListener(this); add(fillC);add(drawB); clear=new JButton("clear"); clear.addActionListener(this); add(clear); up=new JButton("zUp"); up.addActionListener(this); add(up); down=new JButton("zDown"); down.addActionListener(this); add(down); save=new JButton("Save"); save.addActionListener(this); add(save); load=new JButton("Load"); load.addActionListener(this); add(load); } public void mouseClicked(MouseEvent e) { JLabel l=(JLabel)e.getSource(); if(e.getClickCount()==2){ Color sc=JColorChooser.showDialog(null, "Color chooser", l.getBackground()); l.setBackground(sc); mousePressed(e); } } public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} public void mousePressed(MouseEvent e) { Color c=((JLabel)e.getSource()).getBackground(); if(fc.isSelected()) fc.setBackground(c); else if(bc.isSelected()) bc.setBackground(c); M.cp(); } public void mouseReleased(MouseEvent e) {} public void actionPerformed(ActionEvent e) { if(e.getSource()==clear)M.clear(); else if(e.getSource()==up)M.up(); else if(e.getSource()==down)M.down(); else if(e.getSource()==save)M.save(); else if(e.getSource()==load)M.load(); else if(e.getSource()==fillC||e.getSource()==drawB)M.cp(); }}class CLabel extends JLabel{ static Color cs={Color.red,Color.orange,Color.yellow,Color.green,Color.cyan, Color.blue,Color.magenta,Color.magenta.brighter(), Color.white,Color.black,Color.gray,Color.LIGHT_GRAY,Color.DARK_GRAY,}; static int i; CLabel(){ this.setOpaque(true); this.setBackground(cs); this.setBorder(BorderFactory.createLineBorder(Color.black)); this.setPreferredSize(new Dimension(10,20)); }}class M{ static JFileChooser jfc=new JFileChooser(); static Menu m=new Menu(); static CVS c=new CVS(); static SA sa=new SA(); static S ts=null,selected=null; static Color fc,bc; static void clear(){ sa.ss.clear(); c.repaint(); } public static void cp() { System.out.println(selected); if(selected!=null){ selected.fillColor=m.fc.getBackground(); selected.borderColor=m.bc.getBackground(); selected.fc=m.fillC.isSelected(); selected.db=m.drawB.isSelected(); c.repaint(); } } public static void up() { if(selected!=null){ sa.upZ(selected); c.repaint(); } } public static void down(){ if(selected!=null){ sa.downZ(selected); c.repaint(); } } static{ jfc.setFileFilter(new FileNameExtensionFilter("JDraw file (*.jdraw,*.jdr)","jdr","jdraw")); } static void save(){ int x=jfc.showSaveDialog(c); if(x==JFileChooser.APPROVE_OPTION){ File f = jfc.getSelectedFile(); try{ ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream(f)); oos.writeObject(sa); oos.flush(); oos.close(); }catch(Exception e){} } } static void load(){ int x=jfc.showOpenDialog(c); if(x==JFileChooser.APPROVE_OPTION){ File f = jfc.getSelectedFile(); try{ ObjectInputStream oos=new ObjectInputStream(new FileInputStream(f)); Object r=oos.readObject(); if(r!=null){ sa=(SA)r; c.repaint(); } oos.close(); }catch(Exception e){e.printStackTrace();} } } static int mx,my,tx,ty,ox,oy; static int pc=0,pmax; static int sm; static boolean ne=true; static int mid; static void mp(Point p){ mid=m.method.getSelectedIndex(); if(mid==0){ if(ne){ mx=p.x;my=p.y; pc=0; sm=m.sbox.getSelectedIndex(); pmax=sm==4?2:1; ne=false; } ++pc; } else if(mid==1){ checkSel(p); mx=p.x;my=p.y; } else if(mid==2){ checkSel(p); if(selected!=null){ sa.ss.remove(selected); c.repaint(); } } } private static void checkSel(Point p) { selected=null; for(int i=sa.ss.size();i》0; i--) if(sa.ss.get(i-1).shape.contains(p)){ selected=sa.ss.get(i-1);break; } sa.select(selected); c.repaint(); } static void mt(){ Shape s=null; int cx,cy,cw,ch; switch(sm){ case 0: case 2: cx=Math.min(mx,tx); cy=Math.min(my,ty); cw=Math.abs(mx-tx); ch=Math.abs(my-ty); if(sm==0) s=new Ellipse2D.Double(cx,cy,cw,ch); else s=new Rectangle(cx,cy,cw,ch); break; case 1: s=new Line2D.Float(mx,my,tx,ty); break; case 3: cw=Math.abs(mx-tx); ch=Math.abs(my-ty); int cd=(int)Math.sqrt(Math.pow(mx-tx,2)+Math.pow(my-ty,2))*2; cx=mx-cd/2; cy=my-cd/2; s=new Ellipse2D.Double(cx,cy,cd,cd); break; case 4: Path3D p=new Path3D.Double(); p.moveTo(mx,my); if(pc==1){ p.lineTo(tx, ty); } else{ p.quadTo(ox,oy,tx,ty); } s=p; break; } ts=new S(s,m.fc.getBackground(),m.bc.getBackground(),m.fillC.isSelected(),m.drawB.isSelected(),null); c.repaint(); } static void md(Point p){ if(mid==0){ if(!sa.ss.isEmpty()){ sa.ss.get(sa.ss.size()-1).sel=false; } if(pc》1){ ox=p.x;oy=p.y; } else{ tx=p.x;ty=p.y; } mt(); } else if(mid==1){ if(selected!=null){ moveTo(selected,p); c.repaint(); } } else if(mid==2){ checkSel(p); if(selected!=null){ sa.ss.remove(selected); c.repaint(); } } } static void moveTo(S s, Point p) { if(s.shape instanceof Rectangle){ Rectangle r=(Rectangle)s.shape; r.setLocation(r.x+p.x-mx,r.y+p.y-my); mx=p.x;my=p.y; } else if(s.shape instanceof Ellipse2D){ Ellipse2D e=(Ellipse2D)s.shape; e.setFrame(e.getX()+p.x-mx,e.getY()+p.y-my,e.getWidth(),e.getHeight()); mx=p.x;my=p.y; } } static void mr(Point p) { if(pc==pmax){ pc=0; ne=true; sa.add(ts); selected=ts; ts=null; } }}class S implements Serializable{ boolean fc,db,sel=true; Shape shape; Color fillColor,borderColor; Stroke stroke; static Stroke bstroke=new MyBasicStroke(); static Stroke selectStroke=new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER,1,new float{5,2},1); S(Shape s,Color c,Color b,boolean f,boolean d,Stroke k){ this.shape=s;this.fillColor=c;this.borderColor=b;this.fc=f;this.db=d;this.stroke=k==null?bstroke:k; } void draw(Graphics2D g){ if(fc){ g.setColor(fillColor); g.fill(shape); } if(db){ g.setColor(borderColor); g.setStroke(stroke); g.draw(shape); } if(sel){ g.setColor(Color.green); g.setStroke(selectStroke); g.draw(shape.getBounds()); } }}class MyBasicStroke extends BasicStroke implements Serializable{}class SA implements Serializable{ ArrayList《S》 ss=new ArrayList《S》(); void add(S s){ if(s!=null){ for(S sx:ss) sx.sel=false; ss.add(s); } } S remove(int i){ return ss.remove(i); } void remove(S s){ ss.remove(s); } void upZ(S s){ indexZ(s,1); } void downZ(S s){ indexZ(s,-1); } void indexZ(S s, int i) { int si=ss.indexOf(s); if(si+i《0||si+i》ss.size()-1)return; swap(s,ss.get(si+i)); } void swap(S a,S b){ int ai=ss.indexOf(a); int bi=ss.indexOf(b); ss.set(ai,b); ss.set(bi,a); } void select(S s){ for(S x:ss) x.sel=false; if(s!=null) s.sel=true; } void drawAll(Graphics2D g){ for(S s:ss) s.draw(g); }}

用Java设计一个图形界面（GUI）的计算器应用程序，完成简单的算术运算

下午发 五分钟搞定，先给你发个简单的，照例子自己去做你想要的计算器package aaa;import java.awt.*;import java.awt.event.*;import javax.swing.*;public class YunSuan implements ActionListener,ItemListener{ public static JFrame jf; public static Container c; public static JTextField jtf1,jtf2,jtf3; public static JButton jb1; public static Choice c2; public static String fuhao=""; public YunSuan() { jf=new JFrame("加减乘除运算"); c=jf.getContentPane(); c.setLayout(new FlowLayout()); jtf1=new JTextField(10); jtf2=new JTextField(10); jtf3=new JTextField(10); c2=new Choice(); jb1=new JButton("="); } public void Jiemian() { c.add(jtf1); c2.addItemListener(this); c2.add(""); c2.add("+"); c2.add("-"); c2.add("*"); c2.add("/"); c.add(c2); c.add(jtf2); jb1.addActionListener(this); c.add(jb1); c.add(jtf3); jf.setLocation(200,100); jf.setVisible(true); jf.pack(); } public static void main(String args) { YunSuan ys=new YunSuan(); ys.Jiemian(); }public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub double s1=Integer.parseInt(jtf1.getText()); double s2=Integer.parseInt(jtf2.getText()); double result=0; if(fuhao.equals("+")) { result=s1+s2; String result2=String.valueOf(result); jtf3.setText(result2); } if(fuhao.equals("-")) { result=s1-s2; String result2=String.valueOf(result); jtf3.setText(result2); } if(fuhao.equals("*")) { result=s1*s2; String result2=String.valueOf(result); jtf3.setText(result2); } if(fuhao.equals("/")) { result=s1/s2; String result2=String.valueOf(result); jtf3.setText(result2); } }public void itemStateChanged(ItemEvent ie) { if(ie.getSource()==c2) { String str1=c2.getSelectedItem(); fanhui(str1); } } public String fanhui(String str2) { return fuhao=str2; }}

如何用JavaGUI设计QQ那样的界面

代码没法给你写,但是道理是很简单的.其实QQ的列表原理非常简单,其界面就是一颗JTree,设置树根不可见,树根的没给子节点就是每个分组.而列表内容的实现就更简单了,自己写一个实现了TableCellRenderer的渲染器,然后给设置为分组下每个节点的渲染器就行了.数据结构也超简单,就是三层树,第一层是根root,设置为不可见,所以只能看到他的几个节点;第二层是根root的节点,也就是分组,有几个分组就有几个节点,新建一个分组就是在root上添加一个新的子节点;第三层就是每个分组的内容了,这就是QQ列表的实现原理.别告诉我你不知道渲染器是什么,如果还没学到,等学到了你就能做出来.

怎样用JAVA的GUI（图形用户界面）来设计一个程序！求程序和详解

//正好以前注释过一个import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.KeyAdapter;import java.awt.event.KeyEvent;import java.awt.image.MemoryImageSource;import java.util.Random;import javax.swing.JDialog;import javax.swing.JPanel;import javax.swing.Timer;public class CharacterRain extends JDialog implements ActionListener {    private static final long serialVersionUID = 1L;    private Random random = new Random();    private Dimension screenSize;    private JPanel graphicsPanel;    private final static int gap = 20;    private int posArr;    private int lines;    private int columns;    public static void main(String args) {        new CharacterRain();    }    public CharacterRain() {        initComponents();    }    private void initComponents() {        setLayout(new BorderLayout());        graphicsPanel = new GraphicsPanel();        add(graphicsPanel, BorderLayout.CENTER);        Toolkit defaultToolkit = Toolkit.getDefaultToolkit();        Image image = defaultToolkit.createImage(new MemoryImageSource(0, 0,                null, 0, 0));        Cursor invisibleCursor = defaultToolkit.createCustomCursor(image,                new Point(0, 0), "cursor");        setCursor(invisibleCursor);        KeyPressListener keyPressListener = new KeyPressListener();        this.addKeyListener(keyPressListener);        this.setAlwaysOnTop(true);        this.setUndecorated(true);        this.getGraphicsConfiguration().getDevice().setFullScreenWindow(this);        this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);        setVisible(true);        screenSize = Toolkit.getDefaultToolkit().getScreenSize();        lines = screenSize.height / gap;       //用gap来分行        columns = screenSize.width / gap;   //用gap来分列        posArr = new int;          random = new Random();        for (int i = 0; i 《 posArr.length; i++) {            posArr = random.nextInt(lines); //随机行数        }        new Timer(100, this).start();    }    private char getChr() {        return (char)  (random.nextInt(94) + 33);   //返回随机字符    }    public void actionPerformed(ActionEvent e) {        graphicsPanel. repaint();           // Timer事件，graphicsPanel重绘    }    @SuppressWarnings("serial")    private class GraphicsPanel extends JPanel {        public void paint(Graphics g) {            Graphics2D g2d = (Graphics2D) g;            g2d. setFont (getFont (). deriveFont (Font. BOLD));            g2d. setColor(Color. BLACK);            g2d. fillRect (0, 0, screenSize. width, screenSize. height);   // 设置背景色为黑色            int currentColumn = 0;            for (int x = 0; x 《 screenSize.width; x += gap) {                int endPos = posArr;      //获得开始行位置                g2d. setColor(Color. GREEN);                g2d.drawString(String.valueOf(getChr()), x, endPos * gap);     //画出随机开始行的字符                int cg = 0;                                                           //初始黑色                int length = 25;                                                    //字符列的长度                for (int j = endPos -length; j 《 endPos; j++) {           //随机行逐列向上length行，为循环开始行                    cg += 255/(length + 1);                                                     //渐变色递增，0，255，0为green                    if (cg 》 255) {                        cg = 255;                    }                    g2d.setColor(new Color(0, cg, 0));                    g2d.drawString(String.valueOf(getChr()), x, j * gap);    //画出随机行后的15行字符，颜色从黑色渐变成绿色，逐行增加                }                posArr += random.nextInt(5);      //下落距离最快为4, 会产生加速下落的感觉                if ((posArr -5)* gap 》 getHeight()) {  //如果行数位置大于屏幕高度，从新获取合适的行                    posArr = random.nextInt(lines);                }                currentColumn++;    //下一列获取随机行            }        }    }    private class KeyPressListener extends KeyAdapter {        public void keyPressed(KeyEvent e) {            if (e.getKeyCode() ==KeyEvent.VK_ESCAPE) {   //监听键盘事件，按ESC按键退出                System.exit(0);            }        }    }}