java reader

Reader类的skip()方法 (Reader 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 from this stream. It will block until some input exists, or any input/output error or stream is reached its end.

  skip()方法用于从此流中跳过给定数量的字符。 它将阻塞，直到存在某些输入，或者到达任何输入/输出错误或流为止。

• 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。
  • IllegalArgumentException: This exception may throw when the given parameter is less than 0.IllegalArgumentException ：当给定参数小于0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 Readerimport java.io.*;public class SkipOfR {
       public static void main(String[] args) throws Exception {
           Reader r_stm = null;        try {
               // Instantiates Reader            r_stm = new StringReader("JavaWorld!!!!");            for (int val = 0; val < 6; ++val) {
                   // By using read() method is to                // read the integer and represent as char                char ch = (char) r_stm.read();                // Display ch                System.out.println("ch: " + ch);                // By using skip() method is to skip                // the given byte of data                long skip = r_stm.skip(1);                System.out.println("r_stm.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 (r_stm != null) {
                   r_stm.close();            }        }    }}

Output

输出量

ch: Jr_stm.skip(1): 1ch: vr_stm.skip(1): 1ch: Wr_stm.skip(1): 1ch: rr_stm.skip(1): 1ch: dr_stm.skip(1): 1ch: !r_stm.skip(1): 1

翻译自:

java reader