【Java4】IO重定向

 1 public class Practice {
 2     public static void main(String[] args) {
 3         try{
 4             PrintStream out = System.out;
 5             PrintStream ps = new PrintStream("./a.txt");
 6             System.setOut(ps);
 7             System.out.println("年龄为18，性别为女");
 8             System.setOut(out);
 9             System.out.println("信息已经录入，请查看");
10         }catch(FileNotFoundException e){
11             e.printStackTrace();
12         }
13     }
14 }