Java程序设计教程 冶金工业出版社第5章(5)

add(diploma);

//新建“Gender”标签并设置属性 label = new JLabel(\constraints.gridy = 2; constraints.gridwidth = 1; constraints.gridheight = 2;

gridbag.setConstraints(label, constraints); add(label);

//新建“Male”单选按钮并设置属性 male = new JRadioButton(\true); female = new JRadioButton(\bg.add(male); bg.add(female); constraints.gridx = 1; constraints.gridy = 2; constraints.gridheight = 1;

gridbag.setConstraints(male, constraints); add(male);

constraints.gridy = 3;

gridbag.setConstraints(female, constraints); add(female);

//新建“Likes”标签并设置属性 label = new JLabel(\constraints.gridx = 0; constraints.gridy = 4; constraints.gridheight = 1;

gridbag.setConstraints(label, constraints); add(label);

//新建“Gym”，“Music”，“Computer”选择框并设置属性 gym = new JCheckBox(\music = new JCheckBox(\computer = new JCheckBox(\constraints.gridx = 1; constraints.gridy = 4; add(gym);

constraints.gridy = 5;

gridbag.setConstraints(music, constraints); add(music); constraints.gridy = 6;

gridbag.setConstraints(gym, constraints);

}

gridbag.setConstraints(computer, constraints); add(computer);

//新建“Best skill”标签并设置属性 label = new JLabel(\constraints.gridx = 2; constraints.gridy = 1; constraints.gridwidth = 2;

gridbag.setConstraints(label, constraints); add(label);

constraints.gridx = 2; constraints.gridy = 2; constraints.gridheight = 5; //新建列表并设置属性 skill = new JList(elements);

JScrollPane scroll = new JScrollPane(skill); skill.setVisibleRowCount(5);

skill.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); gridbag.setConstraints(scroll, constraints); add(scroll);

//新建“Summit”按钮并设置属性 summit = new JButton(\summit.addActionListener(this); constraints.gridx = 1; constraints.gridy = 7; constraints.gridwidth = 1; constraints.gridheight = 1;

gridbag.setConstraints(summit, constraints); add(summit);

//新建“Cancel”按钮并设置属性 cancel = new JButton(\cancel.addActionListener(this); constraints.gridx = 2; constraints.gridy = 7; constraints.gridwidth = 1; constraints.gridheight = 1;

gridbag.setConstraints(cancel, constraints); add(cancel);

public void actionPerformed(ActionEvent e) { //按钮响应事件

if (e.getSource() == summit) {

if (name.getText() != null && password.getText() != null

&& skill.getSelectedIndex() >= 0 && skill.getSelectedIndex() <= 6) {

String msg = new String();

msg = \

+ password.getText() + (male.isSelected() ? \Male\: \Female\+ \Best skill:\+ elements[skill.getSelectedIndex()];

} }

}

if (e.getSource() == cancel) System.exit(0);

JOptionPane.showMessageDialog(this, msg, \

JOptionPane.PLAIN_MESSAGE);

} else

JOptionPane.showMessageDialog(this, \ \PLAIN_MESSAGE);