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Copy pathPushBackInputStreamDemo.java
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28 lines (26 loc) · 1.11 KB
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package io;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.PushbackInputStream;
/**
* Created by helmeter on 5/10/16.
*/
public class PushBackInputStreamDemo {
public static void main(String[] args) throws IOException {
String str = "hello,rollenholt";
PushbackInputStream push = null; // 声明回退流对象
ByteArrayInputStream bat = null; // 声明字节数组流对象
bat = new ByteArrayInputStream(str.getBytes());
push = new PushbackInputStream(bat); // 创建回退流对象，将拆解的字节数组流传入
int temp = 0;
while ((temp = push.read()) != -1) { // push.read()逐字节读取存放在temp中，如果读取完成返回-1
if (temp == ',') { // 判断读取的是否是逗号
push.unread(temp); //回到temp的位置
temp = push.read(); //接着读取字节
System.out.print("(回退" + (char) temp + ") "); // 输出回退的字符
} else {
System.out.print((char) temp); // 否则输出字符
}
}
}
}