BufferedInputStream

package file; import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException; public class Demo3 {
public static void main(String[] args) throws IOException {
readTest();
} //BufferedInputStream维护的是一个字节数组，8192
//凡是缓冲流，都不具备读写文件的能力
public static void readTest() throws IOException {
File file = new File("F:\\2.txt");
FileInputStream fileInputStream = new FileInputStream(file);
//建立缓冲输入字节流
//因为BufferedInputStream不具备读写文件的能力，要借助FileInputStream
BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream); //读取文件数据
int content = 0;
while((content = bufferedInputStream.read()) != -1) {
System.out.println((char)content);
} //关闭资源
bufferedInputStream.close(); //实际上关闭的FileInputStream的close
}
}