Java FileInputStream skip()方法

java.io.FilterInputStream.skip(long n) 用于跳过并丢弃输入流中的x字节数据。

1 语法

public long skip(long n)

2 参数

n：要跳过的字节数

3 返回值

返回实际跳过的字节数。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 *  java.io.FilterInputStream.skip(long n)方法的例子
 */
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;

public class Demo {
    public static void main(String[] args) throws Exception {
        InputStream is = null;
        FilterInputStream fis = null;
        int i = 0;
        char c;

        try {
            // create input streams
            is = new FileInputStream("d://test.txt");
            fis = new BufferedInputStream(is);

            while((i = fis.read())!=-1) {

                // converts integer to character
                c = (char)i;

                // skips 3 bytes
                fis.skip(3);

                // print
                System.out.println("Character read: "+c);
            }

        } catch(IOException e) {
            // if any I/O error occurs
            e.printStackTrace();
        } finally {
            // releases any system resources associated with the stream
            if(is!=null)
                is.close();
            if(fis!=null)
                fis.close();
        }
    }
}

假设test.txt内容如下：

ABCDE

输出结果为：

Character read: A
Character read: E