例子
以下示例显示java.io.ByteArrayInputStream.available()方法的用法。
package com.jc2182;
import java.io.ByteArrayInputStream;
import java.io.IOException;
public class ByteArrayInputStreamDemo {
public static void main(String[] args) throws IOException {
byte[] buf = {65, 66, 67, 68, 69};
ByteArrayInputStream bais = null;
try {
// create new byte array input stream
bais = new ByteArrayInputStream(buf);
int count =0;
// read till the end of the stream
while((count = bais.available())>0) {
// convert byte to character
char c = (char)bais.read();
// print number of bytes available
System.out.print("available byte(s) : "+ count);
// print characters read form the byte array
System.out.println(" & byte read : "+c);
}
} catch(Exception e) {
// if I/O error occurs
e.printStackTrace();
} finally {
if(bais!=null)
bais.close();
}
}
}
让我们编译并运行以上程序,这将产生以下结果-
available byte(s) : 5 & byte read : A
available byte(s) : 4 & byte read : B
available byte(s) : 3 & byte read : C
available byte(s) : 2 & byte read : D
available byte(s) : 1 & byte read : E