例子
以下示例显示java.io.BufferedInputStream.reset()方法的用法。
package com.jc2182;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
public class BufferedInputStreamDemo {
public static void main(String[] args) throws Exception {
InputStream iStream = null;
BufferedInputStream bis = null;
try {
// read from file c:/test.txt to input stream
iStream = new FileInputStream("c:/test.txt");
// input stream converted to buffered input stream
bis = new BufferedInputStream(iStream);
// read and print characters one by one
System.out.println("Char : "+(char)bis.read());
System.out.println("Char : "+(char)bis.read());
System.out.println("Char : "+(char)bis.read());
// mark is set on the input stream
bis.mark(0);
System.out.println("Char : "+(char)bis.read());
System.out.println("reset() invoked");
// reset is called
bis.reset();
// read and print characters
System.out.println("char : "+(char)bis.read());
System.out.println("char : "+(char)bis.read());
} catch(Exception e) {
e.printStackTrace();
} finally {
// releases any system resources associated with the stream
if(iStream!=null)
iStream.close();
if(bis!=null)
bis.close();
}
}
}
假设我们有一个文本文件c:/test.txt ,其内容如下。该文件将用作示例程序的输入-
让我们编译并运行以上程序,这将产生以下结果-
Char : A
Char : B
Char : C
Char : D
reset() invoked
char : D
char : E