choiceitem.java

利用JAVA开发的简单考试系统

package viewer;

import javax.swing.JPanel;
import java.awt.Rectangle;
import java.awt.Color;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JRadioButton;
import javax.swing.Box;
import java.awt.SystemColor;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import model.persistency.PersistentItem;
import javax.swing.JTextField;
import javax.swing.JOptionPane;
import javax.swing.JCheckBox;
import java.awt.Point;
import java.awt.Dimension;

/**
 * <p>Title: </p>
 * 选择题框架
 * <p>Description: </p>
 * 对于选择题调用选择题框架，对用户选择的答案记录在父框架的答案属性中
 */
public class ChoiceItem extends TestFrame{
   PersistentItem item;// 当前题目

   ButtonGroup g = new ButtonGroup();
   JRadioButton aRadioButton = new JRadioButton();
   JRadioButton dRadioButton = new JRadioButton();
   JRadioButton bRadioButton = new JRadioButton();
   JRadioButton cRadioButton = new JRadioButton();
    JButton jButton1 = new JButton();
    /**
    * constructor
    * @param it PersistentItem   当前题目
    */
   public ChoiceItem(PersistentItem it) {
        super(it);
        this.item = it;
        try {
            jbInit();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        setSize(new Dimension(525, 440));


        aRadioButton.setText("A");
        aRadioButton.setBounds(new Rectangle(29, 240, 43, 23));
        aRadioButton.addActionListener(new ActionListener(){
         public void actionPerformed(ActionEvent e){
        trace("A",aRadioButton);}
        });//匿名类
        cRadioButton.setText("C");
        cRadioButton.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e){
        trace("C",cRadioButton);}
          });
        cRadioButton.setBounds(new Rectangle(129, 240, 43, 23));
        bRadioButton.setText("B");
        bRadioButton.addActionListener(new ActionListener(){
         public void actionPerformed(ActionEvent e){
         trace("B",bRadioButton);}
          });
        bRadioButton.setBounds(new Rectangle(79, 240, 43, 23));
        dRadioButton.setText("D");
        dRadioButton.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e){
        trace("D",dRadioButton);}
        });
        dRadioButton.setBounds(new Rectangle(179, 240, 43, 23));
        jButton1.setText("jButton1");
        g.add(aRadioButton); g.add(bRadioButton);
        g.add(cRadioButton); g.add(dRadioButton);
        this.getContentPane().add(bRadioButton);
        this.getContentPane().add(dRadioButton);
        this.getContentPane().add(cRadioButton);
        this.getContentPane().add(aRadioButton);
        this.getContentPane().add(jButton1);
    }
    /**
     * 记录点击的题目，赋给父类答案属性
     * @param a String            按钮代表的字符串
     * @param cb JRadioButton     按钮名称
     */
    private void trace(String a, JRadioButton cb){
      if(cb.isSelected())
          super.answer = a;
     }

}//~~