Java开发网 - .write()括号中看不懂

Topic: .write()括号中看不懂

1..write()括号中看不懂

Posted by: simule
Posted on: 2005-04-20 20:30

.write()括号中参数什么意思?3者有什么关系?刚学不久看不懂.谢谢
比如有下面个程序段
Static void copyContent (FileInputStream inObj,FileOutputStream outObj)
{
int copyLen;
byte[] copyBut= new byte[1024];
try{
while((copyLen=inObj.read(copyBut,0,1024))!=-1){
String copyStr=new Srting(copyBut);
System.out.println(copyStr);
outObj.write(copyBut,0,copyLen);
}
}

最后outObj.write(copyBut,0,copyLen)括号中3参数什么意思?

2.Re:.write()括号中看不懂 [Re: simule]

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Posted by: why
Posted on: 2005-04-20 20:49

Please check the Java API in the future.
http://java.sun.com/j2se/1.4.2/docs/api/java/io/FileOutputStream.html#write(byte[],%20int,%20int)

write
public void write(byte[] b,
int off,
int len)
throws IOExceptionWrites len bytes from the specified byte array starting at offset off to this file output stream.

Overrides:
write in class OutputStream

Parameters:
b - the data.
off - the start offset in the data.
len - the number of bytes to write.

Throws:
IOException - if an I/O error occurs.

3.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: simule Posted on: 2005-04-21 08:40 看不懂这句 the start offset in the data. 斑竹解释下

4.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: why Posted on: 2005-04-21 08:58 offset ~ position start offset ~ starting position write "len" bytes of data "b", starting from position "off", to the FileOutputStream instance

5.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: simule Posted on: 2005-04-22 09:04 我懂了,谢谢斑竹还有个问题: media包里有哪些类,各有什么用?你上面给我的网站不知道有没有,不过还是得去看看.

6.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: why Posted on: 2005-04-22 09:36 simule wrote: media包里有哪些类,各有什么用?你上面给我的网站不知道有没有,不过还是得去看看. What is media 包? Java Media Framework API (JMF)? http://java.sun.com/products/java-media/jmf/ http://java.sun.com/products/java-media/jmf/2.1.1/download.html

7.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: simule Posted on: 2005-04-24 13:49 我说的是JEME中Media包里中的类,要声音处理不知道用哪个类

8.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: why Posted on: 2005-04-24 19:17 J2ME中的Media包???? What is it? Mobile Media API, MMAPI, JSR 135 ??? Please make a new post on our J2ME board.

9.Re:.write()括号中看不懂 [Re: simule]	Copy to clipboard
Posted by: simule Posted on: 2005-04-26 20:33 I have made a new post on J2ME board. I'm a new learner,I am preciate to everyone who can help me.Thank you.