330 Java Tips.pdf - FTP Server

General Java Questions II
public MyEnumeration(Vector v){
size = v.size();
e = v.elements();
index = 0;
}
public boolean hasMoreElements(){
return e.hasMoreElements();
}
public Object nextElement(){
index++;
return e.nextElement();
}
public int size(){
return size;
}
public int getIndex(){
return index;
}
}
-by
Nicolas Delbing and Victor Vishnyakov
Is there a way to provide values for a Vector in the source code, analogous to
array initializers?
Answer: The Vector class constuctors take no arguments other than Collection (since
JDK 1.2), which is abstract, and since a Vector is a structure whose size can change
dynamically, it's contents can only be initialaized through member methods.
--
Mike Lundy
How would I add a help file to a java application?
Would it have to be platform specific, or is there a Java api for making help files?
If so, what is it?
Answer: See JavaHelp at http://www.javasoft.com/products/javahelp/
you create HTML pages for the main text, and add some XML files for a hierarchical
table of contents and a map from TOC tags to relative URLs giving document
locations.
What is a Just-In-Time(JIT) compiler?
Answer: It is a JVM that compiles Java instructions (called bytecode) into native
machine instructions at run time and then uses this compiled native code when the
corresponding Java code is needed. This eliminates the constant overhead of
interpretation which tradition first generation JVM's used.
--
Dave Lee
Is there a collection object like the hashmap or hashtable that stores values in an
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