一般情况下不要直接使用System.in。用InputStreamReader和BufferedReader将System.in改装一下，再用readLine()。
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s = br.readLine();
public class TestScanner {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
System.out.println("请输入字符串：");
while (true) {
String line = s.nextLine();
if (line.equals("exit")) break;
System.out.println(">>>" + line);
}
}
}
java System.in 使用
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转载自school104.iteye.com/blog/2257851
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