Question

我试图从我的swing应用程序中打开多个JFrames。我知道这不是最佳做法，但我必须这样做。当我从不同的线程中打开多个JFrames作为swing应用程序时，会出现新窗口，但没有出现components。当我直接从eclipse（不使用GUI）运行应用程序时，代码将编译并显示components。

我如何添加新的JFrames

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Image;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.concurrent.ExecutionException;

import javax.swing.*;
import javax.imageio.ImageIO;
import javax.swing.GroupLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSlider;
import javax.swing.JTextField;


public class Gui extends javax.swing.JFrame {

    int GenNum;
    /**
     * Creates new form gui
     */
    public Gui() {
        initComponents();
        setTitle("Mario Bros Genetic Algorithm");
        setSize(600,400);
    }
    int[][] gameGrid;
    public Gui(int[][] gg) {
        this();
        this.gameGrid = gg;
    }

    public void train() {
        GeneticAlgorithm ga = new GeneticAlgorithm(jSlider1.getValue()/100, jSlider2.getValue(), 169);
        try {
            ga.start(jSlider3.getValue());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void buildLevel() {
        setVisible(false);
        new LevelMaker().setVisible(true);
    }

    @SuppressWarnings("unchecked")
    private void initComponents() {

        jSlider1 = new javax.swing.JSlider();
        jLabel1 = new javax.swing.JLabel();
        jSlider2 = new javax.swing.JSlider();
        jLabel2 = new javax.swing.JLabel();
        jSlider3 = new javax.swing.JSlider();
        JLabel3 = new javax.swing.JLabel();
        button = new JButton("Train");

        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                train();
            }
        });

        button2 = new JButton("Create new Level");
        Jlabel4 = new javax.swing.JLabel();

        button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                buildLevel();
            }
        });

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jSlider1.setFont(new java.awt.Font("Tahoma", 1, 18)); 
        jSlider1.setForeground(new java.awt.Color(255, 0, 102));
        jSlider1.setMajorTickSpacing(10);
        jSlider1.setPaintLabels(true);
        jSlider1.setPaintTicks(true);
        jSlider1.setValue(0);
        jSlider1.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                jSlider1StateChanged(evt);
            }
        });
        jSlider2.setFont(new java.awt.Font("Tahoma", 1, 18)); 
        jSlider2.setForeground(new java.awt.Color(255, 0, 102));
        jSlider2.setMajorTickSpacing(10);
        jSlider2.setPaintLabels(true);
        jSlider2.setPaintTicks(true);
        jSlider2.setValue(0);
        jSlider2.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                jSlider2StateChanged1(evt);
            }
        });
        jSlider3.setFont(new java.awt.Font("Tahoma", 1, 18)); 
        jSlider3.setForeground(new java.awt.Color(255, 0, 102));
        jSlider3.setMajorTickSpacing(10);
        jSlider3.setPaintLabels(true);
        jSlider3.setPaintTicks(true);
        jSlider3.setValue(0);
        jSlider3.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                jSlider3StateChanged(evt);
            }
        });

        jLabel1.setFont(new java.awt.Font("serif", Font.BOLD, 22)); // NOI18N
        jLabel1.setText("0" + "%" + " Mutation Rate");
        jLabel2.setText("Generations: " + "0");
        jLabel2.setFont(new java.awt.Font("serif", Font.BOLD, 22));
        JLabel3.setText("Population Size: " + "0");
        JLabel3.setFont(new java.awt.Font("serif", Font.BOLD, 22 ));
        Jlabel4.setFont(new java.awt.Font("serif", Font.BOLD, 22)); // NOI18N
        Jlabel4.setText("Mario Bros Genetic Algorithm");




        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
                layout.createParallelGroup()


                .addComponent(jLabel1)


                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)

                        .addComponent(jSlider1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        //              .addComponent(jSlider1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        //                      .addComponent(jSlider1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jLabel1)
                        .addComponent(jSlider2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jLabel2)
                        .addComponent(jSlider3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(JLabel3)
                        .addComponent(button, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(button2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)


                        //                      .addComponent(JLabel3)
                        )); 

        layout.setVerticalGroup(
                layout.createSequentialGroup()


                .addComponent(jSlider1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                //.addComponent(jSlider2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                //      .addComponent(jSlider3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                //
                .addComponent(jLabel1)
                .addComponent(jSlider2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jLabel2)
                .addComponent(jSlider3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(JLabel3)
                .addComponent(button,  javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(button2,  javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                //              .addComponent(JLabel3)
                //

                );


        jLabel1.getAccessibleContext().setAccessibleName("JLblVal");
        jLabel2.getAccessibleContext().setAccessibleName("JLblVal");


        pack();
    }// </editor-fold>                        

    private void jSlider1StateChanged(javax.swing.event.ChangeEvent evt) {                                   
        jLabel1.setText(Integer.toString(jSlider1.getValue()) + "%" + "Mutation Rate");

    }

    private void jSlider2StateChanged1(javax.swing.event.ChangeEvent evt) {
        jLabel2.setText("Generations:" + Integer.toString(jSlider2.getValue()));

    }
    private void jSlider3StateChanged(javax.swing.event.ChangeEvent evt) {
        JLabel3.setText("PopSize: " + jSlider3.getValue());

    }




    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {

        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Gui().setVisible(true);
            }
        });
    }

    // Variables declaration                  
    private javax.swing.JLabel jLabel1;
    private javax.swing.JSlider jSlider1;
    private javax.swing.JSlider jSlider2; 
    private JLabel jLabel2;
    private JSlider jSlider3; 
    private javax.swing.JLabel JLabel3;
    Image img;
    JButton button;
    JButton button2;
    private javax.swing.JLabel Jlabel4; 
}

Answer 1

您是否尝试过在新的orderArray = new String[length]; menuDisplay(); int item; //the item number that user must enter for(int i=1; i<=length;i++) { System.out.println("Please choose item #"+ i+": "); scan.next(); while(!scan.hasNextInt()) //this while loop checks that an integer value has been entered { System.out.println("Please enter an integer value from the above menu."); scan.next(); } }中添加新的JFrames？

要执行此操作，只需简单地使拥有JFrame的任何对象继承自Thread，然后创建Thread。在旧的JFrame中，只需调用run()。

在Swing中设置Sliders后，JFrame中的组件不显示

1 个答案: