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package com.mingrisoft.thread;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class ThreadNameTest extends JFrame {
private JPanel contentPane;
private JTable table;
private JTextField textField1;
private JTextField textField2;
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Throwable e) {
e.printStackTrace();
}
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
ThreadNameTest frame = new ThreadNameTest();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public ThreadNameTest() {
addWindowListener(new WindowAdapter() {
@Override
public void windowActivated(WindowEvent e) {
do_this_windowActivated(e);
}
});
setTitle("查看和修改线程名称");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel panel = new JPanel();
contentPane.add(panel, BorderLayout.SOUTH);
textField1 = new JTextField();
textField1.setFont(new Font("微软雅黑", Font.PLAIN, 16));
panel.add(textField1);
textField1.setColumns(6);
JButton button1 = new JButton("新建线程");
button1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
do_button1_actionPerformed(e);
}
});
button1.setFont(new Font("微软雅黑", Font.PLAIN, 16));
panel.add(button1);
textField2 = new JTextField();
textField2.setFont(new Font("微软雅黑", Font.PLAIN, 16));
panel.add(textField2);
textField2.setColumns(6);
JButton button2 = new JButton("修改名称");
button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
do_button2_actionPerformed(e);
}
});
button2.setFont(new Font("微软雅黑", Font.PLAIN, 16));
panel.add(button2);
JScrollPane scrollPane = new JScrollPane();
contentPane.add(scrollPane, BorderLayout.CENTER);
table = new JTable();
table.setFont(new Font("微软雅黑", Font.PLAIN, 14));
table.setRowHeight(30);
JTableHeader header = table.getTableHeader();
header.setFont(new Font("微软雅黑", Font.PLAIN, 16));
header.setPreferredSize(new Dimension(header.getWidth(), 35));
scrollPane.setViewportView(table);
}
protected void do_this_windowActivated(WindowEvent e) {
ThreadGroup group = Thread.currentThread().getThreadGroup();
Thread[] threads = new Thread[group.activeCount()];
group.enumerate(threads);
DefaultTableModel model = (DefaultTableModel) table.getModel();
model.setRowCount(0);
model.setColumnIdentifiers(new Object[] { "线程ID", "线程名称" });
for (Thread thread : threads) {
model.addRow(new Object[] { thread.getId(), thread.getName() });
}
table.setModel(model);
}
protected void do_button1_actionPerformed(ActionEvent e) {
Object[] newThread = null;
String name = textField1.getText();
if (name.isEmpty()) {
Thread thread = new Thread(new Forever());
thread.start();
newThread = new Object[] { thread.getId(), thread.getName() };
} else {
Thread thread = new Thread(new Forever(), name);
thread.start();
newThread = new Object[] { thread.getId(), name };
}
((DefaultTableModel) table.getModel()).addRow(newThread);
}
protected void do_button2_actionPerformed(ActionEvent e) {
int selectedRow = table.getSelectedRow();
String newName = textField2.getText();
if ((selectedRow == -1) || newName.isEmpty()) {
return;
}
DefaultTableModel model = (DefaultTableModel) table.getModel();
model.setValueAt(newName, selectedRow, 1);
repaint();
}
private class Forever implements Runnable {
@Override
public void run() {
while (true) {
}
}
}
}