我的程序在计时器启动后继续运行。。。我不想在计时器启动并转到showresult()函数后再进行任何输入。。。但程序在显示结果后会跳回获取输入。
如果定时器不启动,程序就完全正常了。。。但当计时器打开时。。。我认为线程仍然停留在函数中,在那里我采取的输入和flw程序返回那里时,标记已显示。我不想这样的行为发生。一旦计时器启动,程序就应该停止接收输入,并且永远不要再返回到它。我不知道怎么做。我是这个领域的新手:p
import java.util.*;
class Quiz {
private String questions[][];
private int marks;
public Quiz(){
marks = 0;
questions = new String[][]{{
"Name of the screen that recognizes touch input is :",
"Recog screen",
"Point Screen",
"Android Screen",
"Touch Screen",
"4",
""
}};
//questions as stated above is filled.
}
public void displayQues(int x){
System.out.print("\n Q. "+questions[x][0]);
System.out.print("\n 1. "+questions[x][1]);
System.out.print("\n 2. "+questions[x][2]);
System.out.print("\n 3. "+questions[x][3]);
System.out.print("\n 4. "+questions[x][4]);
}
public void getResponse(){
Timer t = new Timer();
t.schedule(
new TimerTask(){
public void run(){
System.out.print("\n Time is up!");
t.cancel();
return;
}
}, 5*1000L);
System.out.print("\n Timer of 5 Minutes started!");
String temp = "";
for(int i = 0;i < 10;i++){
int x = genDiffRndNum(temp);
displayQues(x);
System.out.print("\n Enter your answer: ");
if(validateAnswer(x))
questions[x][6] = "T";
else
questions[x][6] = "F";
temp = temp+x;
}
}
public int genDiffRndNum(String str){
while(true){
int n = (int)(Math.random()*10);
if(str.indexOf(Integer.toString(n))==-1)
return n;
}
}
public boolean validateAnswer(int ques){
Scanner sc = new Scanner(System.in);
int ans = sc.nextInt();
sc.close();
if(Integer.parseInt(questions[ques][5])==ans){
marks += 3;
return true;
}
marks -= 1;
return false;
}
public void showResults(){
System.out.print("\n Marks Obtained: "+marks);
System.exit(0);
}
public static void main(String[] args) {
Quiz q = new Quiz();
q.getResponse();
q.showResults();
System.exit(0);
}
}
如有任何建议,我们将不胜感激
1条答案
按热度按时间hjqgdpho1#
“返回”在
TimerTask.run
方法从TimerTask.run
方法。它不能使getResponse()
方法退出。退出
getResponse()
,timertask必须设置某种标志,由getResponse()
. 一种可能是使用AtomicBoolean
对象。最初设定为false
,当计时器触发时,它变为true
:循环输入
getResponse
需要检查时间是否到了:但是,这将只检查问题之间的超时。当程序等待用户键入时,不能中断。