Java IO包中InputStreamReader和OutputStreamWriter的简介说明
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Java IO包中InputStreamReader和OutputStreamWriter的简介说明
下文笔者讲述java.io包中InputStreamReader和OutputStreamWriter的简介说明,如下所示:
InputStreamReader和OutputStreamWriter的功能:
将一个字节流转换为字符流
InputStreamReader
InputStreamReader的功能:
将输入的字节流转换为字符流,如下所示:
InputStream inputStream = new FileInputStream("e:\\test\\test.txt");
Reader reader = new InputStreamReader(inputStream);
int data = reader.read();
while(data != -1){
char theChar = (char) data;
data = reader.read();
}
reader.close();
此处的read()方法，将返回一个int型的值(0~65535)
当read()返回-1时,则代表没有剩余可读字符，此时可关闭Reader
OutputStreamWriter
OutputStreamWriter将该输出字节流转换成字符流,如下例所示：
OutputStream outputStream = new FileOutputStream("e:\\test\\output.txt");
Writer writer = new OutputStreamWriter(outputStream);
writer.write("java265.com is my webSite.");
writer.close();