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objects in java

2 replies on 1 page. Most recent reply: Oct 25, 2004 2:20 AM by Matthias Neumair

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fa

Posts: 1
Nickname: fsharmarke
Registered: Oct, 2004

objects in java

Posted: Oct 21, 2004 11:01 PM

Hi, every1, is there a way around to make an object from like:
class myclass{
static void(some parameters)
...do stuff
}
public static main method(....){
...do stuff
},

without creating new class for that purpose.
thanx in advance.

Matthias Neumair

Posts: 660
Nickname: neumi
Registered: Sep, 2003

Re: objects in java

Posted: Oct 25, 2004 2:13 AM

I don't understand exactly what you want.

A object is a instace of a class, that's the definition.

If you don't want to create own classes, you can't code anything.

Your example was a executable class, but normally you don't need the main-Method.

static void(some parameters) doesn't make any sense at all.Y ou want to create a constructor? Then you should write
public myclass (some parameters) {}

btw: class names and the constructor should be upper case (Myclass), everything else lower case.

If you used BASIC until now: Yes, it IS possible to write spaghetti code in Java, there is way to create classes in the code, but it should be used rarely if there is no other way.

I'm writing on a medium size project, until now I created areound 310 classes.

Matthias Neumair

Posts: 660
Nickname: neumi
Registered: Sep, 2003

Re: objects in java

Posted: Oct 25, 2004 2:20 AM

Ok, now I understood what this static void was about.

You made it static because you want to call it from the main method.

Static methods can only access other static methods, objects or variables.

Normally, the main method would not contain a lot of code.

If you want to use only one class, the standard solution is the following:


public MyClass {
public MyClass (parameters) {
   //now, that you have an instance of this class, you don't need static methods anymore
myMethod1(parameters);
}
private void myMethod1 (parameters) {}

public static void main (String[] args) {
//static, because the object does not yet exist when the main method is called by the virtual machine
MyClass myClass = new MyClass(parameters); //let MyClass do the work
System.exit(0);
}

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