stringreader

StringReader类skip()方法 (StringReader 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 characters in the stream.

  skip()方法用于跳过流中给定数量的字符。

• 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 the number of characters.

  skip()方法在跳过字符数时可能会引发异常。

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

  IOException ：在执行过程中遇到任何输入/输出错误时，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 characters to skip.

  长数字 -表示要跳过的字符数。

Return value:

返回值：

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

该方法的返回类型为long ，它返回跳过的确切字符数。

Example:

例：

// Java program to demonstrate the example 
// of long skip(long number) method of StringReader
import java.io.*;
public class SkipOfSR {
public static void main(String[] args) throws Exception {
StringReader str_r = null;
try {
// Instantiates StringReader
str_r = new StringReader("Java World");
// Loop to read until available
// bytes left
for (int val = 0; val <= 4; ++val) {
// Read corresponding char value
char ch = (char) str_r.read();
// Display value of ch
System.out.println("ch: " + ch + " ");
// By using skip() method is
// to skip 1 bytes of data
// from str_r	    
long skip = str_r.skip(1);
System.out.println("str_r.skip(1): " + 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 (str_r != null) {
str_r.close();
}
}
}
}

Output

输出量

ch: J 
str_r.skip(1): 1
ch: v 
str_r.skip(1): 1
ch:   
str_r.skip(1): 1
ch: o 
str_r.skip(1): 1
ch: l 
str_r.skip(1): 1

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

stringreader