java 进度条,不是弹出的进度条,是在JLabel或者JTextField里面显示一个进度,该怎么做呢

Question

java 进度条,不是弹出的进度条,是在JLabel或者JTextField里面显示一个进度,该怎么做呢

Answer 1

楼主是这个意思么？JLabel label = new JLabel();
JProgress progress = new JProgressBar(0,3);
label.add(progress, BorderLayout.NORTH);Changer changer = new Changer(progress);
//注册ActionListener
..........//修改进度条状态的监听类
class Changer implements ActionListener
{
private JProgressBar progress;
public Changer(JProgressBar p)
{
progress = p;
} public void actionPerformed(ActionEvent a)
{
}
}

Answer 2

  import java.awt.BorderLayout;import java.io.FileInputStream;import java.io.FileNotFoundException;import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.ProgressMonitor;
import javax.swing.ProgressMonitorInputStream;public class Bar {
    public Bar() {
    }    public static void main(String[] args) {
        Bar bar = new Bar();
        byte b[]=new byte[30];
        JTextArea text = new JTextArea(20,20);
        JFrame jframe=new JFrame();
        jframe.setSize(280,300);
        jframe.setVisible(true);
        jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jframe.add(new JScrollPane(text),BorderLayout.CENTER);
        jframe.validate();
        
            FileInputStream input;
            try {
                input = new FileInputStream("D:\\jdev\\zzzzz\\Project1\\src\\project1\\Bar.java");
                ProgressMonitorInputStream input_progress=new ProgressMonitorInputStream(null,"读取文件",input);
                ProgressMonitor p=input_progress.getProgressMonitor();
                while(input_progress.read(b)!=-1){
                    String s=new String(b);
                    text.append(s);
                    Thread.sleep(200);
                }
            } catch (Exception e) {
                // TODO
                e.printStackTrace();
            }
        
    }
}
运行一下这个 看是不是你想要的