背单词程序，贴上修改后别人的代码

package myfirstjavaproject;
import java.io.*;
import java.util.*;

public class word14T {
public static void main(String[] args)
{
File file=new File("D:\\word.txt");
TestWord test=new TestWord();
test.setFile(file);
test.setStopTime(5);
test.startTest();
}

}
class TestWord
{
File file;
int stopTime;
public void setFile(File f)
{
file=f;
}
public void setStopTime(int t)
{
stopTime=t;
}
public void startTest()
{
Scanner sc=null;
Scanner read=new Scanner(System.in);
try
{
sc=new Scanner(file);
while(sc.hasNext())
{
String word=sc.next();
System.out.println(word);
System.out.println("给"+stopTime+"秒背单词的时间");
Thread.sleep(stopTime*1000);
System.out.println("\r");
for(int i=1;i<=50;i++)
{
System.out.println("*");
}
System.out.println("输入曾经显示的单词");
String input=read.nextLine();//将单词读入input中
if(input.equals(word))
{
System.out.println("单词正确");

}
else
{
System.out.println("单词错误");
}
}
}
catch(Exception exp)
{
System.out.println(exp);

}

}

}