question on single thread & multithread - 未名空间MITBBS历史存档

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question on single thread & multithread

question on single thread & multithread# Java - 爪哇娇娃

g*n2003-08-31 07:08

1 楼

Hello everyone,
I am new to Java and have to ask a simple question.
I am writing a program that has two sockets s1 and s2.
s1 listens to a single client and uses a single thread
s2 listens to possible multiple clients and uses a multithread to track number
of connections, by group.activeCount();
It requires both the single thread and multithread run at the same time. And
the multithread's group.activeCount() needs to be passed to the single thread
every time a thread in the multithread starts or

c*e2003-08-31 07:08

2 楼

Try the following code and you'll see why.
For primitive types, java just copy the value
(instead of passing the reference of that object)
when passing parameters.
class t {
private static void modify(int val)
{
val += 1;
System.out.println("Value of integer inside: "+val);
}
public static void main(String []args){
int t = 0;
modify(t);
System.out.println("Value of integer outside: "+t);
}
}

number
thread
is

【在 g****n 的大作中提到】

: Hello everyone,
: I am new to Java and have to ask a simple question.
: I am writing a program that has two sockets s1 and s2.
: s1 listens to a single client and uses a single thread
: s2 listens to possible multiple clients and uses a multithread to track number
: of connections, by group.activeCount();
: It requires both the single thread and multithread run at the same time. And
: the multithread's group.activeCount() needs to be passed to the single thread
: every time a thread in the multithread starts or