第1个回答 推荐于2018-05-06
public class Hello{
public static void main(String[] args) throws Exception{
java.io.InputStreamReader stdin = new java.io.InputStreamReader(System.in);
java.io.BufferedReader br = new java.io.BufferedReader(stdin);
while(br.read() != -1){
if(br.read() == 13){
System.exit(0);
System.out.println("程序已退出!");
}else{
System.out.println(br.readLine().toUpperCase());
}
}
}
}本回答被网友采纳