我正在编写一个非常简单的GUI,它包含3个按钮,2个标签,2个文本字段和一个文本区域.奇怪的是,结果是不稳定的:当运行类时,GUI会出现随机数量的控件.我尝试了各种布局管理器,改变了控件之间的顺序 - 没有.
有人可以帮忙吗?
package finaltestrunner;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class FinalTestGUI extends JFrame implements ActionListener
{
public Boolean startState = false;
JButton sofButton;
JButton startStopButton;
JButton exitButton;
JTextField loopCounts;
JTextField trSnField;
JTextArea resultField = null;
public FinalTestGUI()
{
// The constructor creates the panel and places the controls
super(); // Jframe constructor
JFrame trFrame = new JFrame();
trFrame.setSize(1000, 100);
trFrame.setVisible(true);
trFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
trFrame.setTitle("Test runner");
setFont(new Font("SansSerif", Font.PLAIN, 14));
// trFrame.setLayout(new FlowLayout());
JPanel trControlPanel = new JPanel();
trControlPanel.setSize(1000, …
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