java - 使用 Java 使应用程序显示在 GUI 中

Question

本周我一直在处理一个问题。你看，我是 Java 新手，所以可能就是这样......

无论如何，我出于纯粹的好奇心开始了一个项目。我用 Java 完成了它，但是是简单的 CMD 风格，这不是很漂亮。它调用我的十个程序之一，由用户使用“Case”选择。例如:如果输入1，则进入程序1。完成后，返回选择，直到用户按0。

在那之后，我一直在尝试为它制作一个GUI。我已经能够单独创建选择器并使其响应所选的数字。如果您按 1 并单击“确定”，它会告诉您已选择程序 1。

但是，我无法让它运行该程序。我一直在尝试让程序显示在 jPanel 中，它是主 GUI 的一部分。我惨败了。

该程序单独运行，但我无法让它们像 CMD 那样一起运行。

这些应用程序是在 Eclipse SDK 3.5.2 中制作的GUI 是在 Netbeans IDE 6.8 中制作的

以下是 GUI 的代码(打印内容为 PT-BR，我的母语):

主程序:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/*
 * ProgramasGUI.java
 *
 * Created on 31/01/2010, 22:56:19
 */

package Main;
import Main.Prog1;

/**
 *
 * @author Zeh®
 */
public class ProgramasGUI extends javax.swing.JFrame {

    /** Creates new form ProgramasGUI */
    public ProgramasGUI() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        selecao = new javax.swing.JTextField();
        mostrador = new javax.swing.JLabel();
        selecionar = new javax.swing.JButton();
        mostrador1 = new javax.swing.JLabel();
        jPanel1 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        selecao.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                selecaoActionPerformed(evt);
            }
        });

        mostrador.setText("Qual o programa desejado?");

        selecionar.setText("OK");
        selecionar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                selecionarActionPerformed(evt);
            }
        });

        mostrador1.setText("Saiba aqui o Programa escolhido!");

        jPanel1.addComponentListener(new java.awt.event.ComponentAdapter() {
            public void componentShown(java.awt.event.ComponentEvent evt) {
                jPanel1ComponentShown(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(selecao, javax.swing.GroupLayout.PREFERRED_SIZE, 203, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(selecionar, javax.swing.GroupLayout.DEFAULT_SIZE, 203, Short.MAX_VALUE))
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(mostrador1, javax.swing.GroupLayout.PREFERRED_SIZE, 193, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(mostrador, javax.swing.GroupLayout.PREFERRED_SIZE, 179, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(162, 162, 162)
                        .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(39, Short.MAX_VALUE)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(30, 30, 30)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(selecao, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(mostrador, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(selecionar)
                    .addComponent(mostrador1))
                .addContainerGap())
        );

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

    private void selecaoActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
    }                                       

    private void selecionarActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
            int programa = (int)((Double.parseDouble(selecao.getText())));
            switch (programa) {
            case 1:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 2:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 3:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 4:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 5:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 6:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 7:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 8:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 9:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;
            case 10:
            mostrador1.setText("O programa " + programa + " foi escolhido!" );
            break;}
    }                                          

    private void jPanel1ComponentShown(java.awt.event.ComponentEvent evt) {

                int programa = (int)((Double.parseDouble(selecao.getText())));
            switch (programa) {
            case 1:
           addNotify(Prog1.);
            break;}
    }

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new ProgramasGUI().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JPanel jPanel1;
    private javax.swing.JLabel mostrador;
    private javax.swing.JLabel mostrador1;
    private javax.swing.JTextField selecao;
    private javax.swing.JButton selecionar;
    // End of variables declaration
}

这是子程序:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/*
 * Prog1.java
 *
 * Created on 02/02/2010, 23:57:59
 */

package Main;

/**
 *
 * @author Zeh®
 */
public class Prog1 extends javax.swing.JPanel {

    /** Creates new form Prog1 */
    public Prog1() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        numesc = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        campo = new javax.swing.JTextField();

        jLabel1.setText("Saiba aqui o Antecessor!");

        numesc.setText("O número escolhido é: X");

        jLabel3.setText("Saiba aqui o Sucessor!");

        jLabel4.setText("Insira um número para saber seu Antecessor e Sucessor!");

        jButton1.setText("Calcular!");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        campo.setText("Insira seu número");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(16, 16, 16)
                                .addComponent(jButton1))
                            .addComponent(campo, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(10, 10, 10)
                                .addComponent(jLabel3))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(10, 10, 10)
                                .addComponent(numesc, javax.swing.GroupLayout.DEFAULT_SIZE, 154, Short.MAX_VALUE))
                            .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, 164, Short.MAX_VALUE)))
                    .addComponent(jLabel4))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel4)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(campo, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(numesc)
                .addGap(11, 11, 11)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(jButton1))
                .addContainerGap(24, Short.MAX_VALUE))
        );
    }// </editor-fold>

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
       int num = (int)((Double.parseDouble(campo.getText())));
            numesc.setText("O número escolhido é: " + num);
          int x = num-1;
            jLabel1.setText ("O antecessor é: " + x);
          int y = num+1;
            jLabel3.setText ("O sucessor é: " + y);
    }


    // Variables declaration - do not modify
    private javax.swing.JTextField campo;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel numesc;
    // End of variables declaration

}

任何帮助将不胜感激。

如果由于某种原因我输入错误和/或错误地设置了这篇文章的布局，请接受我的歉意。

Answer 1

我无法猜测您正在寻找一种从终端运行程序的方法？使用 Runtime.getRuntime().exec(program_call_command);示例将在 GNU/Linux 上打印文件夹内容:

  public class Executor {
        public static void main(String[] args) throws IOException {
            Process p = Runtime.getRuntime().exec("ls");
            InputStream in = p.getInputStream();
            int size = in.available();
            byte[] buf = new byte[size];
            in.read(buf);
            System.out.println(new String(buf));
        }
    }

Or maybe if all your programs are in java, you can create a new thread for each and call main method for every program.

public class Executor {
    public static void main(String[] args) throws IOException {
        System.out.println("Executor started");
        Thread thread = new Thread(){
            @Override
            public void run() {
                Prog_1.main(null);
            }
        };
        thread.start();

        System.out.println("Executor finished");
    }

}

class Prog_1{
    public static void main(String[] args) {
        System.out.println("I am going to sleep");
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            System.out.println("Really, don't whant to");
        }
        System.out.println("Its time to wake up");
    }
}