请教一个java测试题！--有奖励哟。 - 黑马程序员技术交流社区

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
public class LoginTest{
private Frame f;
private Label lab1,lab2;
private TextField t1,t2;
private Button but1,but2;
private TextArea ta;
private String[] info;
Map<String,Map<String,String>> map;
LoginTest(){
setInfo();
init();
f.setVisible(true);
}
//保存账号信息
public void setInfo(){
map=
new TreeMap<String,Map<String,String>>();
Map<String,String> blog1 = new TreeMap<String,String>();
Map<String,String> blog2 = new TreeMap<String,String>();
blog1.put("login2-test@sohu.com","123654");
blog1.put("login3-test@sohu.com","123654");
blog2.put("login1_test@163.com","a123654");
blog2.put("login2_test@163.com","a123654");
map.put("http://blog.sohu.com",blog1);
map.put("http://blog.163.com",blog2);
}
//获取账号信息，如果账号正确，则将网址，账号，密码存入数组中
public void getInfo(String str){
info = new String[3];
Set<String> keySet = map.keySet();
Iterator<String> it = keySet.iterator();
while(it.hasNext())
{
String addr = it.next();
Map<String,String> blog = map.get(addr);
Set<String> s = blog.keySet();
Iterator<String> ite = s.iterator();
while(ite.hasNext()){
String Account = ite.next();
String Password = blog.get(Account);
if(str.equals(Account)){
info[0] = addr;
info[1] = Account;
info[2] = Password;
}
}
}
}
public void init(){
f = new Frame("登陆系统");
f.setLayout(new FlowLayout());
f.setBounds(300,200,600,650);
lab1=new Label("账号:");
lab1.setBounds(40, 100, 50, 20);
f.add(lab1);
t1=new TextField(15);
t1.setBounds(100, 100, 00, 20);
f.add(t1);
lab2=new Label("密码 :");
lab2.setBounds(40, 150, 50, 20);
f.add(lab2);
t2=new TextField(15);
t2.setBounds(100, 150, 100, 20);
//使在密码框中输入的信息显示为"*"号
t2.setEchoChar('*');
f.add(t2);
but1 = new Button("确定");
but1.setBounds(50,200,50,20);
f.add(but1);
ta = new TextArea(25,70);
f.add(ta);
Event();
}
public void Event(){
f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
but1.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) {
test();
}
});
}
public void test(){
//ta先清空，以免保存之前内容
ta.setText("");
String Account = t1.getText();
String Password = t2.getText();
getInfo(Account);
for(String s:info){
System.out.println(s);
}
// 账号错误，info不会被初始化
if(info[0]==null)
ta.append("账号错误");
else if(Password.equals(info[2])){
ta.append("账号正确，密码正确\r\n");
ta.append("登陆网站："+info[0]+"\r\n"+"账号："
+info[1]+"\r\n密码："+info[2]);
}
else{
ta.append("密码不正确\r\n");
ta.append("登陆网站："+info[0]+"\r\n"+"账号："
+info[1]+"\r\n密码："+info[2]+"\r\n");
}
info=null;
}
public static void main(String[] args) {
new LoginTest();
}
}

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