1 swing

1 功能点实战

1.1 jtextArea---添加滚动条

1.2 进度条

2 功能点详情

1.1 jtextArea---添加滚动条

 
      JPane jp; 
     

 
      JTextArea jt= 
      new  
      JTextArea();

 
      JScrollPane js= 
      new  
      JScrollPane(jt);

 
      //分别设置水平和垂直滚动条自动出现 
     

 
      js.setHorizontalScrollBarPolicy( 
     

 
      JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); 
     

 
      js.setVerticalScrollBarPolicy( 
     

 
      JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); 
     

 
      //分别设置水平和垂直滚动条总是出现 
     

 
      js.setHorizontalScrollBarPolicy( 
     

 
      JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS); 
     

 
      js.setVerticalScrollBarPolicy( 
     

 
      JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); 
     

 
      //分别设置水平和垂直滚动条总是隐藏 
     

 
      js.setHorizontalScrollBarPolicy( 
     

 
      JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); 
     

 
      js.setVerticalScrollBarPolicy( 
     

 
      JScrollPane.VERTICAL_SCROLLBAR_NEVER); 
     

添加滚动条

 
      jp.add(js); 
     

注意:jp.add(js); 最终添加的是JScrollPane对象，而不能添加JTextArea

1.2 进度条

ps:注意

jfMain.setState(JFrame.NORMAL); //jframe窗口本身最小化调用此方法显示最前方
jfMain.toFront(); //jframe窗口被别的程序挡住调用此方法显示最前方
jfMain.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); //jframe 窗口的x(关闭按钮) 控制其donothing docole

package com.sdmc.update.util;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.WindowConstants;

public class Progress extends Thread{//自定义类progress
private final int []progressValue = {1,2,3,4,5,18,27,39,51,66,81,95,99};
private JFrame jfMain;
private JProgressBar progressBar;
private JButton buttonDo;
private JButton buttonCancel;

public Progress(JFrame jfMain,JProgressBar progressBar,JButton buttonDo){
this.jfMain = jfMain;
this.progressBar = progressBar;
this.buttonDo =buttonDo;
}

public Progress(JFrame jfMain,JProgressBar progressBar,JButton buttonDo,JButton buttonCancel){
this.jfMain = jfMain;
this.progressBar = progressBar;
this.buttonDo =buttonDo;
this.buttonCancel =buttonCancel;
}


public void run()
{
for(int i=0;i<progressValue.length;i++)
{
try{
if(progressValue[i]==51){
System.out.println("开始真正的更新进度:"+progressValue[i]);
Thread.sleep(5000);
}else{
Thread.sleep(1000);
}

}catch(Exception e){
e.printStackTrace();
}
progressBar.setValue(progressValue[i]); //进度值
}
progressBar.setIndeterminate(false); //采用确定的进度条
//progressBar.setIndeterminate(true); //不确定进度的进度条

progressBar.setString("升级完成."); //提示信息
System.out.println("升级完成");
jfMain.setState(JFrame.NORMAL);
jfMain.toFront();
jfMain.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

buttonDo.setEnabled(true); //按钮可用
buttonCancel.setEnabled(true); //按钮可用
}
}

1 功能点实战

2 功能点详情

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