Java中Writer类的write(String，int，int)方法用于在流上写入指定String的指定部分。该字符串作为参数。要写入的字符串的起始索引和长度也作为参数。
用法:
public void write(String string, int startingIndex, int lengthOfstring)
参数：此方法接受三个强制参数：
string这是要写入流中的字符串。
startingIndex这是获取字符部分的起始索引。
lengthOfstring这是要在流上写入的String的长度。
返回值：此方法不返回任何值。
下面的方法说明了write(String，int，int)方法的用法：
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);
}
}
}
输出：
G