Question

我对编码很新，我只是想创建一个简单的GUI。我的代码的目标是设计一个看起来像这样的应用程序：！http：//curriculum.kcdistancelearning.com/courses/PROG2s-HS-A08/s/unit7/resources/images/JV_7.5.11.JPG！[代码目标示例] 我一直在使用窗口构建器，我喜欢它在构建器内部的样子。我的问题是当我尝试将我的代码作为Java应用程序运行时。显示“选择不包含applet”的错误我想我可能错过了一些东西。我不确定我错过了什么，或者它会是什么。

以下是我的代码目前的样子：

`package Create.GUI`
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.border.LineBorder;
import java.awt.Color;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.SpringLayout;
import javax.swing.ImageIcon;
import javax.swing.SwingConstants;
import javax.swing.JScrollPane;
import java.awt.TextArea;
import java.awt.Button;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Canvas;
import javax.swing.JProgressBar;
import javax.swing.JToggleButton;
import javax.swing.JTextArea;
import javax.swing.JButton;
import javax.swing.JScrollBar;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPasswordField;
import java.awt.BorderLayout;
public class StringPannel1 extends JFrame 
{
    private StringPannel1 currentPannel;
    public StringPannel1() {
        getContentPane().setBackground(Color.WHITE);
        SpringLayout springLayout = new SpringLayout();
        getContentPane().setLayout(springLayout);

    JButton btnNewButton = new JButton("Button");
    springLayout.putConstraint(SpringLayout.NORTH, btnNewButton, 23, SpringLayout.NORTH, getContentPane());
    springLayout.putConstraint(SpringLayout.WEST, btnNewButton, 23, SpringLayout.WEST, getContentPane());
    springLayout.putConstraint(SpringLayout.SOUTH, btnNewButton, 88, SpringLayout.NORTH, getContentPane());
    getContentPane().add(btnNewButton);

    txtTextFeild = new JTextField();
    txtTextFeild.setBackground(new Color(248, 248, 255));
    springLayout.putConstraint(SpringLayout.NORTH, txtTextFeild, 0, SpringLayout.NORTH, btnNewButton);
    springLayout.putConstraint(SpringLayout.WEST, txtTextFeild, 27, SpringLayout.EAST, btnNewButton);
    springLayout.putConstraint(SpringLayout.SOUTH, txtTextFeild, 0, SpringLayout.SOUTH, btnNewButton);
    springLayout.putConstraint(SpringLayout.EAST, txtTextFeild, -53, SpringLayout.EAST, getContentPane());
    txtTextFeild.setText("Text Feild");
    getContentPane().add(txtTextFeild);
    txtTextFeild.setColumns(10);

    JScrollBar scrollBar = new JScrollBar();
    springLayout.putConstraint(SpringLayout.NORTH, scrollBar, 17, SpringLayout.SOUTH, btnNewButton);
    springLayout.putConstraint(SpringLayout.WEST, scrollBar, 23, SpringLayout.WEST, getContentPane());
    springLayout.putConstraint(SpringLayout.SOUTH, scrollBar, 130, SpringLayout.SOUTH, btnNewButton);
    getContentPane().add(scrollBar);

    JTextArea txtrTextArea = new JTextArea();
    txtrTextArea.setBackground(new Color(248, 248, 255));
    springLayout.putConstraint(SpringLayout.NORTH, txtrTextArea, 0, SpringLayout.NORTH, scrollBar);
    springLayout.putConstraint(SpringLayout.WEST, txtrTextArea, 7, SpringLayout.EAST, scrollBar);
    springLayout.putConstraint(SpringLayout.SOUTH, txtrTextArea, 0, SpringLayout.SOUTH, scrollBar);
    springLayout.putConstraint(SpringLayout.EAST, txtrTextArea, 173, SpringLayout.EAST, scrollBar);
    txtrTextArea.setText("Text Area");
    getContentPane().add(txtrTextArea);

    JCheckBox chckbxCheckBox = new JCheckBox("Check Box");
    chckbxCheckBox.setBackground(new Color(255, 255, 255));
    springLayout.putConstraint(SpringLayout.NORTH, chckbxCheckBox, 58, SpringLayout.SOUTH, txtTextFeild);
    springLayout.putConstraint(SpringLayout.WEST, chckbxCheckBox, 6, SpringLayout.EAST, txtrTextArea);
    getContentPane().add(chckbxCheckBox);

    JLabel lblLabel = new JLabel("Label");
    springLayout.putConstraint(SpringLayout.NORTH, lblLabel, 15, SpringLayout.SOUTH, txtrTextArea);
    springLayout.putConstraint(SpringLayout.WEST, lblLabel, 104, SpringLayout.WEST, getContentPane());
    lblLabel.setFont(new Font("Tahoma", Font.PLAIN, 13));
    getContentPane().add(lblLabel);
}
private JTextField txtTextFelid;
/**
 * @wbp.nonvisual location=-193,109
 */
private final JButton button = new JButton("New button");
private JTextField txtTextFeild;
public void StringPannel()
{
    currentPannel = new StringPannel1();

    setupFrame();
}

private void setupFrame() 
{
    this.setVisible(true);
    this.setContentPane(currentPannel);
    this.setSize(350, 350);
    this.setDefultCloseOpperation(JFrame.EXIT_ON_CLOSE);
}
 private void setDefultCloseOpperation(int exitOnClose) {
    // TODO Auto-generated method stub

}
{

{
    setupPannel1()
}
private void setupPannel() 
{
    setBorder(new LineBorder(new Color(0, 0, 255)));
    setBackground(new Color(255, 255, 255));
    SpringLayout springLayout = new SpringLayout();
    getContentPane().setLayout(springLayout);




}

private void setBorder(LineBorder lineBorder) {
    // TODO Auto-generated method stub

}
}

感谢所有帮助！

Answer 1

基本上，您的应用程序来自JFrame而不是JApplet。

两者之间存在（重大）差异......

我会是第一个说出来的人......

始终根据JPanel创建核心用户界面，然后将此/这些添加到您要使用的容器（JFrame或JApplet），它会使您的代码更具可重用性，允许您按照自己的意愿部署应用程序，而不必诉诸某种黑客......
在了解UI的工作原理之前，您应该避免使用applet。小程序带来了自己的问题，这些问题可能让你的生活非常悲惨，直到你理解它们

如果您一心想开发applet，请查看Lesson: Java Applets了解更多详情

Java applet，当我按下作为Java applet运行时不运行

1 个答案: