Java 中 CharArrayWriter size()方法示例

原文:https://www . geeksforgeeks . org/chararraywriter-size-method-in-Java-with-examples/

Java 中 CharArrayWriter 类的 size() 方法用于获取缓冲区的当前大小。 语法 :

public int size()

参数:此方法不接受任何参数。 返回值:该方法返回一个整数值,表示缓冲区的当前大小。 以下程序举例说明上述方法: 程序 1:

Java 语言(一种计算机语言,尤用于创建网站)

// Java program to illustrate
// the size() method

import java.io.*;

public class GFG {
    public static void main(String[] args)
        throws IOException
    {

        // Initializing the character array
        char[] geek = { 'G', 'E', 'E', 'K', 'S' };

        // Initializing 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());
    }
}

Output: 

Size of char_array1 : 5

节目 2:

Java 语言(一种计算机语言,尤用于创建网站)

// Java program to illustrate
// the size() method

import java.io.*;

public class GFG {
    public static void main(String[] args)
        throws IOException
    {

        // Initializing the character array
        char[] geek
            = { 'G', 'O', 'P', 'A', 'L', 'L' };

        // Initializing 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());
    }
}

Output: 

Size of char_array1 : 6

参考:https://docs . Oracle . com/javase/10/docs/API/Java/io/chararraywriter . html # size()T4】