Making Code Backward Compatible (SDK 1.4 - 1.3)?

In SDK there is a method added in Toolkit class: "public void setDynamicLayout(boolean dynamic)".
Is it possible to generate code which is compatible no matter if the bytecode runs on a 1.3 VM or a 1.4 VM?
I would like to do something like (pseudocode):
if(sdkVers > 1.4)
Toolkit.getDefaultToolkit().setDynamicLayout(true);I didn't try it, but I think it wouldn't work. Or am I wrong? If I'm right, is there a way to do what I want (make code compatible on different VM versions)?

Actually, I think it is a very good question. One that I have been wondering about for some time myself. The question is: when will the JVM actually try to lookup the method? Is it when the class is loaded or resolved? Or is it when it has to call the method the very first time? Or is this not specified at all?
if(sdkVers > 1.4)
Toolkit.getDefaultToolkit().setDynamicLayout(true);If the JVM waits until the actualy method invocation, then the above code would actually work on a 1.3 JVM since it will never try to invoke the non-existing method.
Our programs need to be able to run on Java 1.3 because we have to support MacOS X. But it annoys me that I cannot take advantage of 1.4 features when the program runs on Windows. I don't like the use of reflection because it destroys compile-time checking. So until now I have stayed away from using 1.4 features completely.

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I am making code to try to make a game and my problem is that my code......

I am making code to try to make a game and my problem is that my code
will not let it change the hit everytime so im getting the first guy to hit 1 then next hits 8 and so on and always repeats.
Another problem is that I would like it to attack with out me telling it how much times to attack. I am using Object oriented programming.
Here is the code for my objects:
import java.lang.*;
import java.io.*;
import java.net.*;
import java.util.*;
import java.util.Random;
import static java.lang.Math.*;
import java.awt.*;
import java.awt.color.*;
class rockCrab {
     //Wounding formula
     double sL = 70;                                   // my Strength Level
     double bP = 1;                                   // bonus for prayer (is 1 times prayer bonus)
     double aB = 0;                                 // equipment stats
     double eS = (sL * bP) + 3;                         // effective strength
     double bD = floor(1.3 + (eS/10) + (aB/80) + ((eS*aB)/640));     // my base damage
     //Attack formula
     double aL = 50;                                   // my Attack Level
     double eD = 1;                                   // enemy's Defence
     double eA = aL / eD;                              // effective Attack
     double eB = 0;                                   // equipment bonus'
     double bA = ((eA/10) * (eB/10));                    // base attack
     //The hit formula
     double fA = random() * bA;
     double fH = random() * bD;
     double done = rint(fH - fA);
     //health formula
     double health = floor(10 + sL/10 * aL/10);
     rockCrab() {
     void attack() {
          health = floor(10 + sL/10 * aL/10);
          double done = rint(fH - fA);
          fA = random() * bA;
          fH = random() * bD;
          done = rint(fH - fA);
          System.out.println("Rockcrab hit" +done);
import java.lang.*;
import java.io.*;
import java.net.*;
import java.util.*;
import java.util.Random;
import static java.lang.Math.*;
import java.awt.*;
import java.awt.color.*;
class self {
     //Wounding formula
     double sL = 1;                                   // my Strength Level
     double bP = 1;                                   // bonus for prayer (is 1 times prayer bonus)
     double aB = 0;                                 // equipment stats
     double eS = (sL * bP) + 3;                         // effective strength
     double bD = floor(1.3 + (eS/10) + (aB/80) + ((eS*aB)/640));     // my base damage
     //Attack formula
     double aL = 1;                                   // my Attack Level
     double eD = 1;                                   // enemy's Defence
     double eA = aL / eD;                              // effective Attack
     double eB = 0;                                   // equipment bonus'
     double bA = ((eA/10) * (eB/10));                    // base attack
     //The hit formula
     double fA = random() * bA;
     double fH = random() * bD;
     double done = rint(fH - fA);
     //health formula
     double health = floor(10 + sL/10 * aL/10);
     self() {
     void attack() {
          health = floor(10 + sL/10 * aL/10);
          fA = random() * bA;
          fH = random() * bD;
          done = rint(fH - fA);
          System.out.println("You hit" +done);
}Here is the main code that writes what the objects do:
class fight {
     public static void main(String[] args) {
          self instance1 = new self();
          rockCrab instance2 = new rockCrab();
          instance2.health = instance2.health - instance1.done;
          System.out.println("You hit: " +instance1.done);
          System.out.println("rockCrabs health: " + instance2.health);
          instance1.health = instance1.health - instance2.done;
          System.out.println("RockCrab hit: " +instance2.done);
          System.out.println("rockCrabs health: " + instance1.health);
          instance2.health = instance2.health - instance1.done;
          System.out.println("You hit: " +instance1.done);
          System.out.println("rockCrabs health: " + instance2.health);
          instance1.health = instance1.health - instance2.done;
          System.out.println("RockCrab hit: " +instance2.done);
          System.out.println("rockCrabs health: " + instance1.health);
          instance2.health = instance2.health - instance1.done;
          System.out.println("You hit: " +instance1.done);
          System.out.println("rockCrabs health: " + instance2.health);
          instance1.health = instance1.health - instance2.done;
          System.out.println("RockCrab hit: " +instance2.done);
          System.out.println("rockCrabs health: " + instance1.health);
          instance2.health = instance2.health - instance1.done;
          System.out.println("You hit: " +instance1.done);
          System.out.println("rockCrabs health: " + instance2.health);
          instance1.health = instance1.health - instance2.done;
          System.out.println("RockCrab hit: " +instance2.done);
          System.out.println("rockCrabs health: " + instance1.health);
}when the code is run it says something like this:
you hit 1
RockCrabs health is 9
RockCrab hit 7
your health is 38
you hit 1
RockCrabs health is 8
RockCrab hit 7
your health is 31
you hit 1
RockCrabs health is 7
RockCrab hit 7
your health is 24
you hit 1
RockCrabs health is 6
RockCrab hit 7
your health is 17
my point is whatever some one hits it always repeats that
my expected output would have to be something like
you hit 1
RockCrabs health is 9
RockCrab hit 9
your health is 37
you hit 3
RockCrabs health is 6
RockCrab hit 4
your health is 33
you hit 2
RockCrabs health is 4
RockCrab hit 7
your health is 26
you hit 3
RockCrabs health is 1
RockCrab hit 6
your health is 20
Edited by: rade134 on Jun 4, 2009 10:58 AM

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I created an application using Weblogic8.1 workshop. I want to deploy the same
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Jaya wrote:
Hi all,
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