textdemo.java

Java 程序设计源码 只提供了部分

import java.awt.event.ActionListener;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;

public class TextDemo extends JFrame
    implements ActionListener {
  private JLabel jlbName, jlbAddr, jlbTel;
  private JTextField jtfName, jtfAddr, jtfTel;
  private JTextArea jtaCollect;
  private JPanel inputPanel, collectPanel;
  private GridBagLayout inputLayout;
  private GridBagConstraints constraints;
  private Container container;

  public static void main(String[] args) {
    TextDemo td = new TextDemo();
    td.setSize(300,260);

    td.setLayout();

    td.setVisible(true);
  }

  public TextDemo() {
    super("Personal Info");
    setSize(300, 260);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    this.container = this.getContentPane();
    this.container.setLayout(new GridLayout(2, 1));
  }

  private void AddComponent(JPanel panel, GridBagLayout layout, GridBagConstraints
                            gbc, Component com, int row, int column, int numRows,
                            int numColumns, int Weightx, int Weighty) {
    gbc.gridx = row;
    gbc.gridy = column;
    gbc.gridwidth = numRows;
    gbc.gridheight = numColumns;
    gbc.weightx = Weightx;
    gbc.weighty = Weighty;

    layout.setConstraints(com, gbc);

    panel.add(com);
  }

  public void setLayout() {
    inputPanel = new JPanel();
    inputLayout = new GridBagLayout();
    constraints = new GridBagConstraints();

    inputPanel.setLayout(inputLayout);

    constraints.anchor = GridBagConstraints.CENTER;
    //
    jlbName = new JLabel("Name");
    constraints.fill = GridBagConstraints.NONE;
    AddComponent(inputPanel, inputLayout, constraints, jlbName, 0, 0, 1, 1, 20, 20);

    jtfName = new JTextField();
    constraints.fill = GridBagConstraints.HORIZONTAL;
    AddComponent(inputPanel, inputLayout, constraints, jtfName, 1, 0, 1, 1, 80, 100);

    //
    jlbAddr = new JLabel("Addr");
    constraints.fill = GridBagConstraints.NONE;
    AddComponent(inputPanel, inputLayout, constraints, jlbAddr, 0, 1, 1, 1, 20, 20);

    jtfAddr = new JTextField();
    constraints.fill = GridBagConstraints.HORIZONTAL;
    AddComponent(inputPanel, inputLayout, constraints, jtfAddr, 1, 1, 1, 1, 80, 100);

    //
    jlbTel = new JLabel("Tel");
    constraints.fill = GridBagConstraints.NONE;
    AddComponent(inputPanel, inputLayout, constraints, jlbTel, 0, 2, 1, 1, 20, 20);

    jtfTel = new JTextField();
    jtfTel.addActionListener(this);
    constraints.fill = GridBagConstraints.HORIZONTAL;
    AddComponent(inputPanel, inputLayout, constraints, jtfTel, 1, 2, 1, 1, 80, 100);

    //
    collectPanel = new JPanel();
    collectPanel.setLayout(new BorderLayout());
    jtaCollect = new JTextArea("Collect");
    jtaCollect.enable(false);
    collectPanel.add(jtaCollect);
    container.add(inputPanel);
    container.add(collectPanel);

  }

  public void actionPerformed(ActionEvent e) {
    if(e.getSource() instanceof JTextField) {
      jtaCollect.append("\n");
      jtaCollect.append(jtfName.getText() + "\n");
      jtaCollect.append(jtfAddr.getText() + "\n");
      jtaCollect.append(jtfTel.getText() + "\n");
    }
  }
}