Java Writer write(String, int, int)方法及示例

Java中Writer类的write(String, int, int)方法用于在流中写入指定字符串的指定部分。这个字符串被作为一个参数。要写入的字符串的起始索引和长度也被作为参数。

语法。

public void write(String string, int startingIndex, int lengthOfstring)

参数。该方法接受三个强制性参数。

string是要写入流中的字符串。
startingIndex是起始索引，要从该索引中获取部分字符。
lengthOfstring是要写到流中的字符串的长度。

返回值。该方法不返回任何值。

下面的方法说明了write(String, int, int)方法的工作。

程序1:

// Java program to demonstrate
// Writer write(String, 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 String
            // to be written in the stream
            String string = "GeeksForGeeks";
  
            // Get the starting index
            int startingIndex = 0;
  
            // Get the length of char
            int lengthOfstring = 5;
  
            // Write the portion of the string
            // to this writer using write() method
            // This will put the string in the stream
            // till it is printed on the console
            writer.write(string,
                         startingIndex,
                         lengthOfstring);
  
            writer.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

输出:

Geeks

程序2。

// Java program to demonstrate
// Writer write(String, 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 String
            // to be written in the stream
            String string = "GFG";
  
            // Get the starting index
            int startingIndex = 2;
  
            // Get the length of char
            int lengthOfstring = 1;
  
            // Write the portion of the string
            // to this writer using write() method
            // This will put the string in the stream
            // till it is printed on the console
            writer.write(string,
                         startingIndex,
                         lengthOfstring);
  
            writer.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}