这样声明对吗？？在线等！

[ljliang]

在jsp中这样声明：
<%!
public class OutputPicture{
private InputStream in;
public OutputPicture(){

}
public setMyInputStream(InputStream in){
this.in=in;
}
public void outputPhoto(){
byte[] b = new byte[1024*1024];
int len;
OutputStream out1;
while((len=in.read(b))>0)
out1.write(b,0,len);
out1.flush();
in.close();
}
}
%>
调用： OutputPicture putpicture=new OutputPicture();
putpicture.setMyInputStream(in); <center><imgsrc=putpicture.outputPhoto() width="5" height="6"></center>

总是有错误：invalid method declaration; return type required
public setMyInputStream(InputStream in){

怎么办？请帮忙！

[gaojunbo]

public setMyInputStream(InputStream in)
{
his.in=in;
}
此方法没有写返回值的类型,如无返回值要写上void,

public void setMyInputStream(InputStream in){
this.in=in;
}

[zez]

楼上说了 :)

[moumouren]

/* 除了构造方法，其他的都必须声明返回值 */
public void setMyInputStream(InputStream in){
this.in=in;
}

[ljliang]

各位说得很对。但是，现在又有新错误：
45: unreported exception java.io.IOException; must be caught or declared to be thrown

46: variable out1 might not have been initialized

46: unreported exception java.io.IOException; must be caught or declared to be thrown

请各位在看看！谢谢！

[gaojunbo]

OutputStream out1;
是一个局部变量,在便用前必须先初始张才行.

[ljliang]

up

[gaojunbo]

out1.write(b,0,len);
这一句要放在
try
{}
catch()
{}
中

[lljjsp]

我也有同样的问题，就是OutputStream out1未初始化，不知如何初始化？我也不知道，谁知道？

[whodsow]

OutputStream outl=new OutputStream(...);
就完成初始化了。

[ljliang]

大家看我的程序，我用什么来初始化呀？我真是不清楚！<%!
public class OutputPicture{
private InputStream in;
public OutputPicture(){

}
public void setMyInputStream(InputStream in){
this.in=in;
}
public void outputPhoto(){
byte[] b = new byte[1024*1024];
int len;
OutputStream out1=new OutputStream();
try{
while((len=in.read(b))>0)
out1.write(b,0,len);
out1.flush();
in.close();
}catch(IOException e){
System.out.println(e.getMessage());
}
}
}
%>

[ljliang]

OutputStream out1=new OutputStream();//// 这行如何改？？？