Java BufferedReader skip（）方法与示例

BufferedReader类skip()方法 (BufferedReader Class skip() method)

skip() method is available in java.io package.
skip()方法在java.io包中可用。
skip() method is used to skip the given number of bytes of characters (n_bytes_of_char) from this BufferedReader.
skip()方法用于从此BufferedReader中跳过给定字节数的字符(n_bytes_of_char)。
skip() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
skip()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
skip() method may throw an exception at the time skipping bytes.
skip()方法在跳过字节时可能会引发异常。
- IOException: This exception may throw while performing input/output operation.IOException ：在执行输入/输出操作时，可能会抛出此异常。
- IllegalArgumentException: This exception may throw when the given parameter is invalid.IllegalArgumentException ：当给定参数无效时，可能引发此异常。

Syntax:

句法：

    public long skip(long n_bytes_of_char);

Parameter(s):

参数：

long n_bytes_of_char – represents the number of bytes of characters to skip.
long n_bytes_of_char –表示要跳过的字符的字节数。

Return value:

返回值：

The return type of the method is long, it returns n_bytes_of_char (i.e. number of bytes of characters) to be skipped.

该方法的返回类型为long ，它返回要跳过的n_bytes_of_char(即字符的字节数)。

Example:

例：

// Java program to demonstrate the example 
// of long skip(long n_bytes_of_char) method of 
// BufferedReader
import java.io.*;
public class SkipBR {
public static void main(String[] args) throws Exception {
// To open text file by using 
// FileInputStream
FileInputStream fis = new FileInputStream("e:/includehelp.txt");
// Instantiates InputStreamReader 
InputStreamReader inp_r = new InputStreamReader(fis);
// Instantiates BufferedReader 
BufferedReader buff_r = new BufferedReader(inp_r);
// Read character from the stream
char ch1 = (char) buff_r.read();
char ch2 = (char) buff_r.read();
char ch3 = (char) buff_r.read();
char ch4 = (char) buff_r.read();
System.out.println("ch1: " + ch1);
System.out.println("ch2 : " + ch2);
System.out.println("ch3: " + ch3);
System.out.println("ch4 : " + ch4);
// It skip 1 bytes of data
// from the stream  
buff_r.skip(1);
char ch = (char) buff_r.read();
System.out.println("ch: " + ch);
fis.close();
inp_r.close();
buff_r.close();
}
}

Output

输出量