StringWriter 用 Java 写(char[]，int，int)方法，示例
原文:https://www . geeksforgeeks . org/stringwriter-write char-int-int-method-in-Java-with-examples/
Java 中 StringWriter 类的 write(char[]，int，int) 方法用于在 Writer 上写入指定字符数组的指定部分。这个字符数组作为一个参数。要写入的字符的起始索引和长度也作为参数。
语法:
public void write(char[]char array、int startingIndex、int lengthofchararray)
参数:该方法接受三个强制参数:
- 字符数组是写入程序中要写入的字符数组。
- 起始索引是字符部分的起始索引。
- chararray length写在书写器上的字符长度。
返回值:此方法不返回值。
下面的程序说明了 write(char[]，int，int)方法的工作原理:
程序 1:
// Java program to demonstrate
// StringWriter write(char[], int, int) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter writer
= new StringWriter();
// 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);
System.out.println(writer.toString());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
A
程序 2:
// Java program to demonstrate
// StringWriter write(char[], int, int) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter writer
= new StringWriter();
// 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);
System.out.println(writer.toString());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
c
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