Java中CharArrayWriter类的size()方法用于获取缓冲区的当前大小。
用法:
public int size()
参数:此方法不接受任何参数。
返回值:此方法返回一个整数值,该值表示缓冲区的当前大小。
以下示例程序旨在说明上述方法:
示例1:
// Java program to illustrate
// the size() method
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
// Initailizing the character array
char[] geek = { 'G', 'E', 'E', 'K', 'S' };
// Initailizing the CharArrayWriter
CharArrayWriter char_array1
= new CharArrayWriter();
for (int c = 72; c < 77; c++) {
// Use of write(int char)
// Writer int value to the Writer
char_array1.write(c);
}
// Use of size() method
System.out.println("\nSize of char_array1 : "
+ char_array1.size());
}
}
输出:
Size of char_array1 : 5
示例2:
// Java program to illustrate
// the size() method
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
// Initailizing the character array
char[] geek
= { 'G', 'O', 'P', 'A', 'L', 'L' };
// Initailizing the CharArrayWriter
CharArrayWriter char_array1
= new CharArrayWriter();
for (int c = 72; c < 78; c++) {
// Use of write(int char)
// Writer int value to the Writer
char_array1.write(c);
}
// Use of size() method
System.out.println("\nSize of char_array1 : "
+ char_array1.size());
}
}
输出:
Size of char_array1 : 6
参考: https://docs.oracle.com/javase/10/docs/api/java/io/CharArrayWriter.html#size()
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