DataInputStream类skipBytes()方法 (DataInputStream Class skipBytes() method)

• skipBytes() method is available in java.io package.

  skipBytes()方法在java.io包中可用。

• skipBytes() method is used to skip the given number of bytes of data from this DataInputStream.

  skipBytes()方法用于从此DataInputStream跳过给定数量的数据字节。

• skipBytes() 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.

  skipBytes()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。

• skipBytes() method may throw an exception at the time of skipping bytes of data.

  skipBytes()方法在跳过数据字节时可能会引发异常。

  IOException: This exception may throw when getting any input/output error.

  IOException ：遇到任何输入/输出错误时，可能引发此异常。

Syntax:

句法：

    public final int skipBytes(int number);

Parameter(s):

参数：

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

  int number –表示要跳过的字节数。

Return value:

返回值：

The return type of the method is int, it returns the exact number of bytes to be skipped.

方法的返回类型为int ，它返回要跳过的确切字节数。

Example:

例：

// Java program to demonstrate the example
// of int skipBytes(int number) method of
// DataInputStream
import java.io.*;
public class SkipBytesOfDIS {public static void main(String[] args) throws IOException {InputStream is_stm = null;
DataInputStream dis_stm = null;
FileOutputStream fos_stm = null;
DataOutputStream dos_stm = null;
byte[] b_arr = {12,
20,
45,
98,
75,
69,
30,
58,
47,
61,
83,
55
};
try {// Instantiate FileInputStream,
// DataInputStream, FileOutputStream
// and DataOutputStream
fos_stm = new FileOutputStream("C:\\Users\\Preeti Jain\\Desktop\\programs\\includehelp.txt");
dos_stm = new DataOutputStream(fos_stm);
// Loop to write each byte till end
for (byte val: b_arr) {// By using write() method isto
// write a byte value to the
// DataOutputStream dos_stm
dos_stm.write(val);
}
is_stm = new FileInputStream("C:\\Users\\Preeti Jain\\Desktop\\programs\\includehelp.txt");
dis_stm = new DataInputStream(is_stm);
// Loop To Read Available Data till end
while (dis_stm.available() > 0) {// By using skipBytes() method is to
// skip 2 bytes of data from the stream
dis_stm.skipBytes(2);
// By using read() method isto read
// byte from dis_stm
int in = dis_stm.read();
System.out.println("dis_stm.read(): " + in );
}
} catch (Exception ex) {System.out.println(ex.toString());
} finally {// To free system resources linked
// with these streams
if (is_stm != null)
is_stm.close();
if (dis_stm != null)
dis_stm.close();
if (dos_stm != null)
dos_stm.close();
if (fos_stm != null)
fos_stm.close();
}
}
}

Output

输出量

dis_stm.read(): 45
dis_stm.read(): 69
dis_stm.read(): 47
dis_stm.read(): 55

翻译自: https://www.includehelp.com/java/datainputstream-skipbytes-method-with-example.aspx