General Java Questions II

}

Then, in your method create one of these, set the corresponding values,

and return it.

MyObj yourMethod() {

   MyObj obj = new MyObj()

   obj.myInt = 20;

   obj.myDouble = 1.0003

   return obj;

}

Q: How do I use object serializtion for an object that has other objects as data

member? Do both the class need to implement serialize?

How about static data?

class A{

}

class B{

public A a;

}

Answer: Both the object and all the object references it contains need to belong to

classes that implement Serializable.

Static and transient fields are not serialized. For more, see,

http://java.sun.com/docs/books/tutorial/essential/io/serialization.html

I recently learned a bit about "inner classes" but this seems to be different...

Q: I m a bit new to Java programming so bear with me. My employer bought a

package of java graphics library programs to support some chart applets

we want to create. We have the source code. I m trying to create a jar

file with all the files I need to run the applet. When I currently run

the applet, the browser java tool says that it can t find

"TextComponent$1.class". I recently learned a bit about "inner classes"

but this seems to be different. The "TextComponent.java" file does

contain some inner classes, but not a class called "1". I m confused.

Is this an inner class? Or is it something else. Any help would be

appreciated. Thanks...

Answer: The TextComponent$1.class is the first anonymous class defined in

TextComponent.java. Since nested (inner) classes are compiled to their own

.class file, they needed unique names. The javac compiler is just creating a

unique file name for an anonymous nested class.

Hi there, does anybody know a good source of design patterns written in JAVA ?

Answer: A pretty good (free to download) book.

http://www.patterndepot.com/put/8/JavaPatterns.htm

Q: Whats the difference between the two: System.err. and System.out? When

should we use System.err?

Answer1: System.out leads the output to the standard output stream (normally

mapped to your console screen), System.err leads the output to the standard error

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