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

Java中PrintStream类的write(byte[], int, int)方法用于将指定byteacter数组的指定部分写入流上。这个 byteacter 数组被作为一个参数。要写入的字节符的起始索引和长度也作为参数。

句法：

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

编程需要懂一点英语

参数：此方法接受三个强制参数：

byteArray ，它是要写入 Stream 的 byteacter 数组。
起始索引，它是从其中获取 byteacter 部分的起始索引。
lengthOfCharArray是要写入流的字节码的长度。

返回值：此方法不返回任何值。

下面的方法说明了 write(byte[], int, int) 方法的工作：

方案一：

// 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：

方案二：

// 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：