fillcolor.java~2~

方面

package fillcolor;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import com.borland.jbcl.layout.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class fillcolor extends Applet {
  boolean isStandalone = false;
  Label label1 = new Label();
  Label label2 = new Label();
  XYLayout xYLayout1 = new XYLayout();
  Checkbox checkbox1 = new Checkbox();
  Checkbox checkbox2 = new Checkbox();
  Checkbox checkbox3 = new Checkbox();
  Checkbox checkbox4 = new Checkbox();
  Checkbox checkbox5 = new Checkbox();
  Checkbox checkbox6 = new Checkbox();
  CheckboxGroup checkboxGroup1 = new CheckboxGroup();
  CheckboxGroup checkboxGroup2 = new CheckboxGroup();
  Button button1 = new Button();
  //Get a parameter value
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  //Construct the applet
  public fillcolor() {
  }
  //Initialize the applet
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception {
    label1.setText("选择图形");
    label2.setText("选择颜色");
    this.setLayout(xYLayout1);
    checkbox1.setCheckboxGroup(checkboxGroup1);
    checkbox1.setLabel("矩形");
    checkbox1.setState(true);
    checkbox1.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox1_itemStateChanged(e);
      }
    });
    checkbox2.setCheckboxGroup(checkboxGroup1);
    checkbox2.setLabel("椭圆形");
    checkbox2.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox1_itemStateChanged(e);
      }
    });
    checkbox3.setCheckboxGroup(checkboxGroup1);
    checkbox3.setLabel("弧形");
    checkbox3.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox1_itemStateChanged(e);
      }
    });
    checkbox4.setCheckboxGroup(checkboxGroup2);
    checkbox4.setLabel("红色");
    checkbox4.setState(true);
    checkbox4.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox4_itemStateChanged(e);
      }
    });
    checkbox5.setLabel("蓝色 ");
    checkbox5.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox4_itemStateChanged(e);
      }
    });
    checkbox6.setLabel("黄色");
    checkbox6.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox4_itemStateChanged(e);
      }
    });
    button1.setLabel("开始 ");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    this.add(label1, new XYConstraints(66, 17, -1, -1));
    this.add(label2, new XYConstraints(231, 18, -1, -1));
    this.add(checkbox1,  new XYConstraints(67, 61, -1, -1));
    this.add(checkbox2, new XYConstraints(67, 95, -1, -1));
    this.add(checkbox3, new XYConstraints(69, 132, -1, -1));
    this.add(checkbox5, new XYConstraints(239, 95, -1, -1));
    this.add(checkbox6, new XYConstraints(241, 126, -1, -1));
    this.add(checkbox4, new XYConstraints(239, 66, -1, -1));
    this.add(button1,    new XYConstraints(112, 166, 124, 28));
  }
  //Get Applet information
  public String getAppletInfo() {
    return "Applet Information";
  }
  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }
int color,kind;
  void checkbox1_itemStateChanged(ItemEvent e) {
if(checkbox1.getState())
kind=1;
if(checkbox2.getState())
kind=2;
if(checkbox3.getState())
kind=3;

  }

  void checkbox4_itemStateChanged(ItemEvent e) {
if(checkbox4.getState())
color=1;
if(checkbox5.getState())
color=2;
if(checkbox6.getState())
color=3;

  }

  void button1_actionPerformed(ActionEvent e) {
repaint();
  }
public void paint(Graphics g){
switch(color){
case 1:
g.setColor(Color.red);
break;
case 2:
g.setColor(Color.blue);
break;
case 3:
g.setColor(Color.yellow);
break;}
switch(kind){
case 1:
g.fillRect(80,150,30,40);
break;
case 2:
g.fillOval(80,150,60,40);
break;
case 3:
g.fillArc(80,150,40,40,0,150);
break;
}   }

}