第1题
注意:不改动程序结构,不得增行或删行。
import java.awt.*;
import java.awt.event.*;
public class ex3 implements______
{
private Panel p1,p2;
private Button btn1,btn2;
private Frame. frm;
private CardLayout cl;
public static void main(String[] args)
{
ex3 tt=new ex3();
tt.method();
}
public void method()
{
Frm=new Frame("CardLayout");
Cl=new CardLayout();
btn1=new Button("Card1");
btn2=new Button("Card2");
pl=new Panel();
p2=new Panel();
p1.add(btn1);
btn1.addActionListener(this);
p2.add(btn2);
______
frm.SetLayout(cl);
frm.add(pl,"Layer1");
frm.add(pl,"Layer1");
frm.SetSize{200,200);
frm.SetVisible(true);
}
public void actionPerformed(ActionEvent ae)
{
______
}
}
第2题
to IAS 10 Events after the balance sheet date?
1 The bankruptcy of a credit customer with a balance outstanding at the balance sheet date.
2 A decline in the market value of investments.
3 The declaration of an ordinary dividend.
4 The determination of the cost of assets purchased before the balance sheet date.
A 1, 3, and 4
B 1 and 2 only
C 2 and 3 only
D 1 and 4 only
第3题
A.Swing中新增了一个BoxLayout布局管理器
B.Swing的事件处理机制继续沿用AWT的事件处理机制,基本的事件处理也要java.awt.event这个包的类,而且java.swing.event包中也增添了一些新的事件及监听器接口
C.与AWT不同的是,JComponent构件默认双缓冲区,不必自己重写代码
D.以上说法都正确
第5题
注意;请勿改动main()主方法和其他已有语句内容,仅在下划线处填入适当的语句。
程序运行结果如下:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border. LineBorder;
public class ex24_2{
private static CardLayout cl=new CardLayout();
private static JPanel cp=new JPanel();
public static void main(String[] args){
JFrame. if=new JFrame();
jf.setTitle("ex24_2");
Container c=jf.getContentPane();
JToolBar jtb=new JToolBar();
JButton btnNext=new JButton(new ImageIcon("next.gif"));
JButton btnPre=new JButton(new ImageIcon("back.gif"));
jtb.add(btnPre);
jtb.add(btnNext);
cp.setLayout(cl);
Dimension dim=new Dimension(150,80);
cp.setPreferredSize(dim);
cp.setBorder(new LineBorder(Color. BLACK));
cp.add(new JLabel("cardl",JLabel.CENTER),"card1");
cp.add(new JLabel("card2",JLabel.CENTER),"card2");
cp.add(new JLabel("card3",JLabel.CENTER),"card3");
c.add(jtb,BorderLayout.NORTH);
c.add(cp,BorderLayout.CENTER);
ActionListener al=new ActionResponse();
____________________________________;
____________________________________;
jf.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
System.exit(0);
}
});
jf.pack();
jf.setVisible(true);
}
static class ActionResponse implements ActionListener{
public void actionPerformed(ActionEvent ae){
if(ae.getActionCommand().equals("next"))
cl.next(cp);
else
cl.previous(cp);
}
}
}
第7题
注意;请勿改动main()主方法和其他已有语句内容,仅在下划线处填入适当的语句。
源程序代码文件清单如下:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.LineBorder;
public class ex20_2
{
private static CardLayout cl=new CardLayout();
private static JPanel cp=new JPanel();
public static void main(String args[])
{
JFrame. jf=new JFrame();
jf.setTitle("ex20_2");
Container c=jf.getContentPane();
JToolBar jtb=new JToolBar();
JButton btnNext=new JButton(new Imagelcon("next.gif"));
JButton btnPre=new JButton(new ImageIcon("back.gif"));
jtb.add(btnPre);
jtb.add(btnNext);
cp.setLayout(c1);
Dimension dim=new Dimension(150,80);
cp.setPreferredSize(dim);
cp.setBorder(new LineBorder(Color.BLACK));
cp.add(new JLabel("card1",JLabel.CENTER),"card1");
cp.add(new JLabel("card2",JLabel.CENTER),"card2");
cp.add(new JLabel("card3",JLabel.CENTER),"card3");
c.add(jtb,BorderLayout.NORTH);
c.add(cp,BorderLayout.CENTER);
ActionListener al=new ActionResponse();
______;
______;
if.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent we)
{
System.exit(0);
}
});
jf.pack();
jf.setVisible(true);
}
static class ActionResponse implements ActionListener
{
public void actionPerformed(ActionEvent ae)
{
if(ae.getActionCommand().equals("next"))
c1.next(cp);
else
c1.previous(cp);
}
}
}
第9题
tmport.java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class CheckBoxFrame. extends JFrame. implements Ac-
tionListener{
public CheckBoxFrame(){
setTitle("CheckBoxTest");
setSize(300,200);
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e)(
System.exit(O);
}
});
JPanel P=new JPanel();
bold=addCheckBox(p,"Bold");
italic=addCheckBox(P,"Italic");
getContentPane().add(p,"South");
panel=new CheekBoxTestPanel();
getContentPane().add(panel,"Center");
}
public JCheckBox addCheekBox(JPanel p,String
name){
JCheckBox c=new JCheekBox(name):
c.addActionListener( );
P.add(c);
return C;
}
public void {
int m=(bold.isSelected()?Font.BOLD:O)+
(italic.isSelected()?Font.ITALIC:O);
panel.setFont(m);
}
private CheckBoxTestPanel panel;
private JCheckBox bold;
private JCheckBox italic;
}
class CheckBoxTestPanel extends JPanel{
public CheckBoxTestPanel(){
setFont(Font.PLAIN);
}
public void setFont(int m){
setFont(new Font("SansSerif",m,12));
repaint();
}
public void paintComponent(Graphics g){
super.paintComponent(g);
9.drawstring("The quick brown fox jumps over
the lazy dog.",0,50);
}
}
public class java2{
public static void main(String[]args){
JFrame. frame=new CheckBoxFrame();
frame.show();
}
}
第10题
A、产生事件的时间
B、事件的类型
C、产生事件的坐标位置
D、用户的权限
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