Java PrintStream write(byte[], int, int)方法及示例

Java中PrintStream类的write(byte[], int, int)方法用于在流中写入指定字节数组的指定部分。这个字节数组被作为一个参数。要写入的字节字符的起始索引和长度也作为参数。

语法。

public void write(byte[] byteArray, int startingIndex, int lengthOfCharArray)

参数。这个方法接受三个强制性参数。

byteArray是要写入Stream中的字节数组。
startingIndex是起始索引，要从该索引中提取字节字符的部分。
lengthOfCharArray是要写入流中的字节字符的长度。

返回值。这个方法不返回任何值。

以下方法说明了write(byte[], int, int)方法的工作。

程序1:

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

输出:

程序2。

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

输出: