After learning the input and output streams did a small program
After reading the data to make a choice GUI True or False
Finally, end button has been changed, the final end has not changed a great effect
Ugh! So be it! !
We will see!
package com.Grap;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class javaIODemo extends JFrame implements ActionListener,ItemListener{
JPanel p1,p2,p3,p4;
JLabel jlQuestion,jlSelect,jlScore;
JButton startbutton,nextbutton,stopbutton;
JTextArea textarea;
JScrollPane scrollpane;
JRadioButton button[];
ButtonGroup buttongroup;
BufferedReader br;
String answer;
void display() throws IOException{
p1=new JPanel();p2=new JPanel();
p3=new JPanel();p4=new JPanel();
jlQuestion=new JLabel("题目");
jlSelect=new JLabel("选项");
jlScore=new JLabel("");
startbutton=new JButton("开始");
nextbutton=new JButton("下一题");
stopbutton=new JButton("结束");
textarea=new JTextArea(3,30);
scrollpane=new JScrollPane(textarea);
button=new JRadioButton[4];
buttongroup=new ButtonGroup();
for(int i=0;i<4;i++){
button[i]=new JRadioButton("");
buttongroup.add(button[i]);
button[i].addItemListener(this);
}
br=new BufferedReader(new FileReader("G:\\text.txt"));
int m=0;
br.mark(m);
Container c=getContentPane();//上部添加
p3.add(jlQuestion);
p3.add(scrollpane);
c.add(p3,BorderLayout.NORTH);
p1.setLayout(new GridLayout(2,1));//中心添加
p1.add(p4); p1.add(jlScore);
p4.add(jlSelect);
for(int i=0;i<4;i++){
p4.add(button[i]);
}
c.add(p1,BorderLayout.CENTER);
// p2.setLayout(new FlowLayout());
p2.add(startbutton);//下部添加
p2.add(nextbutton);
p2.add(stopbutton);
c.add(p2,BorderLayout.SOUTH);
setSize(400, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
startbutton.addActionListener(this);
nextbutton.addActionListener(this);
stopbutton.addActionListener(this);
}
public void showquestion() throws Exception{
textarea.setText(br.readLine());
for(int i=0;i<4;i++){
button[i].setText(br.readLine());
button[i].setEnabled(true);
}
answer=br.readLine();
jlScore.setText(" ");
}
@Override
public void itemStateChanged(ItemEvent e) {
// TODO Auto-generated method stub
for(int i=0;i<4;i++){
if(button[i].isSelected())
if((int)answer.charAt(0)==i+65)
jlScore.setText("恭喜你，答对了");
else
jlScore.setText("答案错误！");
}
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==startbutton||e.getSource()==nextbutton){
try{
showquestion();
}catch(Exception e1){
e1.printStackTrace();
}
}
if(e.getSource()==stopbutton){
startbutton.setEnabled(false);
nextbutton.setEnabled(false);
// for(int i=0;i<4;i++){
// if(button[i].isSelected())
// button[i].setSelected(false);
//// button[i].setEnabled(false);
// }
stopbutton.setOpaque(true);
stopbutton.addActionListener(this);
}
}
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
(new javaIODemo()).display();
}
}
The last to do it is the case it! !
I hope you adopt! !
