windowbuilder新建项目时出现错误，求各位大神指点迷津

Question

错误内容如下The selected wizard could not be started.
Plug-in org.eclipse.wb.swing was unable to load class org.eclipse.wb.internal.swing.wizards.application.NewSwingApplicationWizard.
An error occurred while automatically activating bundle org.eclipse.wb.swing (482).

Answer 1

package swing;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JPasswordField;

import java.awt.SystemColor;

import javax.swing.JButton;
import javax.swing.LayoutStyle.ComponentPlacement;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Font;

public class LogIn {

private JFrame frame;
private JTextField textField;
private JPasswordField passwordField;
/*adminclass a1 = new adminclass("123", 666666);
salerclass s1 = new salerclass(001, 666666, 0, 0);
salerclass s2 = new salerclass(002, 666666, 0, 0);
salerclass s3 = new salerclass(003, 666666, 0, 0);
salerclass s4 = new salerclass(004, 666666, 0, 0);
salerclass s5 = new salerclass(005, 666666, 0, 0);*/

/**
 * Launch the application.
 */
public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
        public void run() {
            try {
                LogIn window = new LogIn();
                window.frame.setVisible(true);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}

/**
 * Create the application.
 */
public LogIn() {
    initialize();
}

/**
 * Initialize the contents of the frame.
 */
private void initialize() {
    frame = new JFrame();
    frame.setBounds(100, 100, 450, 300);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTextArea textArea = new JTextArea();
    textArea.setFont(new Font("新宋体", Font.BOLD, 18));
    textArea.setBackground(SystemColor.control);
    textArea.setText("\u82F9\u679C\u9500\u552E\u7BA1\u7406\u8F6F\u4EF6");

    JTextArea textArea_1 = new JTextArea();
    textArea_1.setFont(new Font("新宋体", Font.PLAIN, 13));
    textArea_1.setBackground(SystemColor.control);
    textArea_1.setText("\u7528\u6237\u540D\uFF1A");

    JTextArea textArea_2 = new JTextArea();
    textArea_2.setFont(new Font("新宋体", Font.PLAIN, 13));
    textArea_2.setBackground(SystemColor.control);
    textArea_2.setText("\u5BC6\u7801\uFF1A");

    textField = new JTextField();
    textField.setColumns(10);

    passwordField = new JPasswordField();

    JButton button = new JButton("\u767B\u5F55");
    button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {
            System.out.println("chenggong");

            admin ai = new admin();
            frame.dispose();//看这里，一点建议，建议你还是手写，看API,这个生成的真心不怎么好，还有建议把frame封装构造方法中

        }
    });

    JButton button_1 = new JButton("\u6E05\u7A7A");
    button_1.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {
            textField.setText(null);
            passwordField.setText(null);
        }
    });
    GroupLayout groupLayout = new GroupLayout(frame.getContentPane());
    groupLayout
            .setHorizontalGroup(groupLayout
                    .createParallelGroup(Alignment.LEADING)
                    .addGroup(
                            groupLayout
                                    .createSequentialGroup()
                                    .addGroup(
                                            groupLayout
                                                    .createParallelGroup(
                                                            Alignment.LEADING)
                                                    .addGroup(
                                                            groupLayout
                                                                    .createSequentialGroup()
                                                                    .addGap(114)
                                                                    .addComponent(
                                                                            textArea,
                                                                            GroupLayout.PREFERRED_SIZE,
                                                                            186,
                                                                            GroupLayout.PREFERRED_SIZE))
                                                    .addGroup(
                                                            groupLayout
                                                                    .createSequentialGroup()
                                                                    .addGap(57)
                                                                    .addGroup(
                                                                            groupLayout
                                                                                    .createParallelGroup(
                                                                                            Alignment.TRAILING,
                                                                                            false)
                                                                                    .addComponent(
                                                                                            textArea_2,
                                                                                            Alignment.LEADING)
                                                                                    .addComponent(
                                                                                            textArea_1,
                                                                                            Alignment.LEADING,
                                                                                            GroupLayout.DEFAULT_SIZE,
                                                                                            80,
                                                                                            Short.MAX_VALUE))
                                                                    .addGap(53)
                                                                    .addGroup(
                                                                            groupLayout
                                                                                    .createParallelGroup(
                                                                                            Alignment.LEADING)
                                                                                    .addComponent(
                                                                                            passwordField,
                                                                                            GroupLayout.PREFERRED_SIZE,
                                                                                            112,
                                                                                            GroupLayout.PREFERRED_SIZE)
                                                                                    .addComponent(
                                                                                            textField)))
                                                    .addGroup(
                                                            Alignment.TRAILING,
                                                            groupLayout
                                                                    .createSequentialGroup()
                                                                    .addContainerGap()
                                                                    .addComponent(
                                                                            button)
                                                                    .addGap(18)
                                                                    .addComponent(
                                                                            button_1)))
                                    .addContainerGap(130, Short.MAX_VALUE)));
    groupLayout
            .setVerticalGroup(groupLayout
                    .createParallelGroup(Alignment.LEADING)
                    .addGroup(
                            groupLayout
                                    .createSequentialGroup()
                                    .addGap(31)
                                    .addComponent(textArea,
                                            GroupLayout.PREFERRED_SIZE, 31,
                                            GroupLayout.PREFERRED_SIZE)
                                    .addGap(18)
                                    .addGroup(
                                            groupLayout
                                                    .createParallelGroup(
                                                            Alignment.BASELINE)
                                                    .addComponent(
                                                            textArea_1,
                                                            GroupLayout.PREFERRED_SIZE,
                                                            GroupLayout.DEFAULT_SIZE,
                                                            GroupLayout.PREFERRED_SIZE)
                                                    .addComponent(
                                                            textField,
                                                            GroupLayout.PREFERRED_SIZE,
                                                            GroupLayout.DEFAULT_SIZE,
                                                            GroupLayout.PREFERRED_SIZE))
                                    .addGap(33)
                                    .addGroup(
                                            groupLayout
                                                    .createParallelGroup(
                                                            Alignment.BASELINE)
                                                    .addComponent(
                                                            textArea_2,
                                                            GroupLayout.PREFERRED_SIZE,
                                                            26,
                                                            GroupLayout.PREFERRED_SIZE)
                                                    .addComponent(
                                                            passwordField,
                                                            GroupLayout.PREFERRED_SIZE,
                                                            25,
                                                            GroupLayout.PREFERRED_SIZE))
                                    .addGap(18)
                                    .addGroup(
                                            groupLayout
                                                    .createParallelGroup(
                                                            Alignment.BASELINE)
                                                    .addComponent(button_1)
                                                    .addComponent(button))
                                    .addContainerGap(45, Short.MAX_VALUE)));
    frame.getContentPane().setLayout(groupLayout);
}

}