Question

java 输入输出流 一个类中只能使用一次吗？ 流关闭后 就不能再打开吗？

public class InputUserInformation {
/*从键盘输入，返回一个字符串*/
public String inputName () {
int count;
byte[] b = new byte[256];
String str = "";
DataInputStream din = new DataInputStream(System.in);
BufferedInputStream in = new BufferedInputStream(din);
try {
count = in.read(b);
str = new String(b,0,count);
} catch (IOException e) {
e.printStackTrace();
System.out.print("发送I/O错误！");
} finally {
try {
din.close();
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return str;
}

public String inputPassword () {
int count;
byte[] b = new byte[256];
String str = "";
DataInputStream din = new DataInputStream(System.in);
BufferedInputStream in = new BufferedInputStream(din);
try {
count = in.read(b);
str = new String(b,0,count);
} catch (IOException e) {
e.printStackTrace();
System.out.print("发送I/O错误！");
} finally {
try {
din.close();
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return str;
}
}

Answer 1

流关闭后不能在打开，可以重新new一个。

Answer 2

好像是的，得重新启动，除非你用循环

追问

是不是 就是不断重新new 一个

Answer 3

流关闭后不能在打开