Java CharArrayWriter size（）方法与示例

CharArrayWriter类的size()方法 (CharArrayWriter Class size() method)

size() method is available in java.io package.
size()方法在java.io包中可用。
size() method is used to get the current size of this buffer (CharArrayWriter).
size()方法用于获取此缓冲区的当前大小(CharArrayWriter)。
size() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
size()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
size() method does not throw an exception at the time of returning the current size.
返回当前大小时， size()方法不会引发异常。

Syntax:

句法：

    public int size();

Parameter(s):

参数：

It does not accept any parameter.
它不接受任何参数。

Return value:

返回值：

The return type of the method is int, it returns the current size of this stream.

方法的返回类型为int ，它返回此流的当前大小。

Example:

例：

// Java program to demonstrate the example 
// of int size() method of CharArrayWriter
import java.io.*;
public class SizeOfCAW {
public static void main(String[] args) {
CharSequence cs = "Java World!!!";
CharArrayWriter caw = null;
try {
// Instantiates CharArrayWriter
caw = new CharArrayWriter();
// By using append() method is to
// append cs to the caw before calling
// reset()
caw.append(cs);
// By using toString() method is 
// to represent the caw as a string
System.out.print("caw: " + caw.toString());
System.out.println();
// By using size() method isto return
// the size of this stream
int size = caw.size();
// Display size of the stream 
System.out.print("caw.size(): " + size);
} catch (Exception ex) {
System.out.println(ex.toString());
} finally {
// Free all resources linked with this
// stream
if (caw != null)
caw.close();
}
}
}

Output

输出量