FilterInputStream类skip()方法 (FilterInputStream 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 data from this FilterInputStream.

  skip()方法用于从此FilterInputStream跳过给定数目的数据字节。

• 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 of skipping bytes of data.

  skip()方法在跳过数据字节时可能会引发异常。

  IOException: This exception may throw when the given parameter is invalid.

  IOException ：如果给定参数无效，则可能引发此异常。

Syntax:

句法：

    public long skip(long number);

Parameter(s):

参数：

• long number – represents the number of bytes to be skipped.

  long number –表示要跳过的字节数。

Return value:

返回值：

The return type of the method is long, it returns the exact number of bytes skipped.

该方法的返回类型为long ，它返回跳过的确切字节数。

Example:

例：

// Java program to demonstrate the example 
// of long skip(long number) method 
// of FilterInputStream
import java.io.*;
public class SkipOfFIS {
public static void main(String[] args) throws Exception {
FileInputStream fis_stm = null;
FilterInputStream fil_stm = null;
int count = 0;
try {
// Instantiates FileInputStream and 
// FilterInputStream
fis_stm = new FileInputStream("D:\\includehelp.txt");
fil_stm = new BufferedInputStream(fis_stm);
// Loop to read until available
// bytes left
while ((count = fil_stm.read()) != -1) {
// Display corresponding char value
char ch = (char) count;
// Display value of ch
System.out.println("ch: " + ch);
// By using skip() method is
// to skip 2 bytes of char value
// from fil_stm	    
long skip = fil_stm.skip(2);
System.out.println("fil_stm.skip(2): " + skip);
}
} catch (Exception ex) {
System.out.println(ex.toString());
} finally {
// with the help of this block is to
// free all necessary resources linked
// with the stream
if (fis_stm != null) {
fis_stm.close();
if (fil_stm != null) {
fil_stm.close();
}
}
}
}
}

Output

输出量

ch: J
fil_stm.skip(2): 2
ch: a
fil_stm.skip(2): 2
ch: r
fil_stm.skip(2): 2
ch: .
fil_stm.skip(2): 2
ch: .
fil_stm.skip(2): 2

翻译自: https://www.includehelp.com/java/filterinputstream-skip-method-with-example.aspx