wordchange.java~1~

方面

package wordchange;

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 wordchange extends Applet {
  boolean isStandalone = false;
  Label label1 = new Label();
  TextField textField1 = new TextField();
  Label label2 = new Label();
  TextField textField2 = new TextField();
  Label label3 = new Label();
  TextField textField3 = new TextField();
  Label label4 = new Label();
  TextField textField4 = new TextField();
  XYLayout xYLayout1 = new XYLayout();
  Button button1 = new Button();
  TextField textField5 = new TextField();
  Label label5 = new Label();
  //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 wordchange() {
  }
  //Initialize the applet
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception {
    label1.setText("height");
    label2.setText("ColorR");
    textField2.setText("                 ");
    label3.setText("ColorG");
    textField3.setText("               ");
    label4.setText("ColorB");
    this.setLayout(xYLayout1);
    button1.setLabel("开始");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    textField5.setText("                            ");
    label5.setText("请输入字符");
    this.add(label1, new XYConstraints(16, 11, -1, -1));
    this.add(textField3,    new XYConstraints(63, 36, 85, -1));
    this.add(label3, new XYConstraints(13, 39, -1, -1));
    this.add(textField5,  new XYConstraints(110, 83, 133, 28));
    this.add(label5,  new XYConstraints(24, 85, 74, 26));
    this.add(textField1,     new XYConstraints(63, 8, 88, -1));
    this.add(button1, new XYConstraints(249, 85, 68, 25));
    this.add(textField2,  new XYConstraints(235, 9, 82, -1));
    this.add(label2, new XYConstraints(167, 9, -1, -1));
    this.add(textField4,  new XYConstraints(234, 34, 85, -1));
    this.add(label4, new XYConstraints(172, 34, -1, -1));
  }
  //Get Applet information
  public String getAppletInfo() {
    return "Applet Information";
  }
  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }
int colorR,colorG,colorB;//组成颜色的参数变量
Color thiscolor;//颜色值
int height;//高度
Font thisFont;//字体
public void  paint(Graphics g)
{g.setColor(thiscolor);
g.setFont(thisFont);
g.drawString(textField5.getText(),50,3*height);
}

  void button1_actionPerformed(ActionEvent e) {
String s1=textField1.getText();
if(s1==null)
textField1.setText("30");//默认字体高度为30
try{
s1=textField1.getText();
height=Integer.parseInt(s1);
if(height>=60){//最大高度不能超过60
height=60;
textField1.setText("60");}
thisFont=new Font("TimesRoman",Font.ITALIC,height);
}
 catch(Exception ee){
 ee.printStackTrace();
 }
 String s2=textField2.getText();
if(s2==null)
textField2.setText("0");
try{
s2=textField2.getText();
colorR=Integer.parseInt(s2);
if(colorR>255){//参数值不能超过255
colorR=255;
textField2.setText("255");}}
 catch(Exception ee){
 ee.printStackTrace();
 }
  String s3=textField3.getText();
if(s3==null)
textField3.setText("0");
try{
s3=textField3.getText();
colorG=Integer.parseInt(s3);
if(colorG>255){//参数值不能超过255
colorG=255;
textField3.setText("255");}
 }
 catch(Exception ee){
 ee.printStackTrace();
 }
String s4=textField4.getText();
if(s4==null)
textField4.setText("0");
try{
s4=textField4.getText();
colorB=Integer.parseInt(s4);
if(colorB>255){//参数值不能超过255
colorB=255;
textField2.setText("255");}
}
 catch(Exception ee){
 ee.printStackTrace();
 }
thiscolor=new Color(colorR,colorG,colorB);
repaint();//重载paint（）方法
 }

  }
}