例子
以下示例显示java.io.DataInputStream.readUnsignedByte()方法的用法。
package com.jc2182;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
public class DataInputStreamDemo {
public static void main(String[] args) throws IOException {
InputStream is = null;
DataInputStream dis = null;
FileOutputStream fos = null;
DataOutputStream dos = null;
byte[] b = {-124,126};
try {
// create file output stream
fos = new FileOutputStream("c:\\test.txt");
// create data output stream
dos = new DataOutputStream(fos);
// for each byte in byte buffer
for(byte j:b) {
// write byte to data output stream
dos.writeByte(j);
}
// force data to the underlying file output stream
dos.flush();
// create file input stream
is = new FileInputStream("c:\\test.txt");
// create new data input stream
dis = new DataInputStream(is);
// available stream to be read
while(dis.available()>0) {
// returns unsigned 8-bit number
int k = dis.readUnsignedByte();
// print
System.out.print(k+" ");
}
} catch(Exception e) {
// if any error occurs
e.printStackTrace();
} finally {
// releases all system resources from the streams
if(is!=null)
is.close();
if(dis!=null)
dis.close();
if(fos!=null)
fos.close();
if(dos!=null)
dos.close();
}
}
}
让我们编译并运行以上程序，这将产生以下结果-
