stringreader

StringReader類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()方法用于跳過流中給定數量的字符。

• 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()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• skip() method may throw an exception at the time of skipping the number of characters.

  skip()方法在跳過字符數時可能會引發異常。

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

  IOException ：在執行過程中遇到任何輸入/輸出錯誤時，可能引發此異常。

Syntax:

句法：

    public long skip(long number);

Parameter(s):

參數：

• long number – represents the number of characters to skip.

  長數字 -表示要跳過的字符數。

Return value:

返回值：

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

該方法的返回類型為long ，它返回跳過的確切字符數。

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

輸出量

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

翻譯自: https://www.includehelp.com/java/stringreader-skip-method-with-example.aspx

stringreader