Java Writer write(char[], int, int)方法及示例

Java中Writer类的write(char[], int, int)方法是用来将指定的字符数组的指定部分写入写入器中。这个字符数组被作为一个参数。要写入的字符的起始索引和长度也被作为参数。

语法。

public void write(char[] charArray, int startingIndex, int lengthOfCharArray)

参数。这个方法接受三个强制性参数。

charArray是要写入写入器中的字符数组。
startingIndex是起始索引，将从该索引中提取字符部分。
lengthOfCharArray是要写入写入器的字符的长度。

返回值。这个方法不返回任何值。

下面的方法说明了write(char[], int, int)方法的工作。

程序1:

// Java program to demonstrate
// Writer write(char[], int, int) method
  
import java.io.*;
  
class GFG {
    public static void main(String[] args)
    {
  
        try {
  
            // Create a Writer instance
            Writer writer
                = new PrintWriter(System.out);
  
            // Get the character array
            // to be written in the writer
            char[] charArray = { 65, 66, 67 };
  
            // Get the starting index
            int startingIndex = 0;
  
            // Get the length of char
            int lengthOfCharArray = 1;
  
            // Write the portion of the charArray
            // to this writer using write() method
            // This will put the charArray in the writer
            // till it is printed on the console
            writer.write(charArray,
                         startingIndex,
                         lengthOfCharArray);
  
            writer.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

输出:

程序2。

// Java program to demonstrate
// Writer write(char[], int, int) method
  
import java.io.*;
  
class GFG {
    public static void main(String[] args)
    {
  
        try {
  
            // Create a Writer instance
            Writer writer
                = new PrintWriter(System.out);
  
            // Get the character array
            // to be written in the writer
            char[] charArray = { 97, 98, 99 };
  
            // Get the starting index
            int startingIndex = 2;
  
            // Get the length of char
            int lengthOfCharArray = 1;
  
            // Write the portion of the charArray
            // to this writer using write() method
            // This will put the charArray in the writer
            // till it is printed on the console
            writer.write(charArray,
                         startingIndex,
                         lengthOfCharArray);
  
            writer.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

输出: