StringWriter 示例

Java StringWriter 类是一个字符流，它从字符串缓冲区收集输出，可用于构造字符串。

StringWriter 类扩展了 Writer 类。

在 StringWriter 类中，不使用网络套接字和文件等系统资源，因此不需要关闭 StringWriter。

import java.io.*;  
public class StringWriterDemo {  
    public static void main(String[] args) throws IOException {  
        char[] ary = new char[1024];  
        StringWriter writer = new StringWriter();  
        FileInputStream input = null;  
        BufferedReader buffer = null;  
        input = new FileInputStream("c://stringwriter.txt");  
        buffer = new BufferedReader(new InputStreamReader(input, "UTF-8"));  
        int x;  
        while ((x = buffer.read(ary)) != -1) {  
                   writer.write(ary, 0, x);  
        }  
        System.out.println(writer.toString());        
        writer.close();  
        buffer.close();  
    }  
}

上面的示例帮助我们了解 StringWriter 的简单示例，使用 BufferedReader 从流中读取文件数据。