Questions, Extreme begginer - Why wont this work.

Question

/* My Java Program
Failing To Compile 2009 - CurrentDate()
/* Importing */
import java.util.Scanner;
import acm.graphics.*;
import acm.program.*;
class run {
     public static void main(String args[]){
     //Variables
     Scanner ninjatext = new Scanner(System.in);
     Scanner Clarinet_Request = new Scanner(System.in);
     System.out.println(ninjatext.nextLine());
     double pye, var1, ans;
     String yodawg;
     var1 = 2;
     pye = 3.14;
     yodawg ="I heard you like saxaphones  ";
     ans = var1/pye;
          System.out.println("Hello Cruel World?");
          System.out.print(yodawg);
          System.out.print("So i bought you ");
          System.out.print(ans);
          System.out.println(" Saxxes");
          System.out.println("So How many Clarinets Would you like????");
          System.out.println("Enter Number::");
          System.out.println("So " + Clarinet_Request.nextLine() + " Is how many clarinets You would like? Cool");
     /*Please end up working*/
     // Declaring Variables Semi-Randomly Works, Right?
     String test1 = "Ok i hope this works";
     int test2 = 10;
     double test3 = 4.9;
     int test4 = test2/test3; //Random Weird Awnser right???
     System.out.println(test2 + "Divided by" + test3 + "Is Equal To" + test4);
     /* This all should work, at least in theory.... But it wont right? */
     /** What have i gotten myself into? Oh well it sounds like it should work */
     Console console = System.console();
     String username = console.readLine("Lets Do This?: ");
     if (/* String? */username == "yes" || "Yes" || "YES"){
          testingthiscrap LeroyJenkins = new testingthiscrap
          LeroyJenkins.LetsDoThis()
     /* Guaranteed to not work */
public class testingthiscrap extends GraphicsProgram {
     /** Runs the program */
     public void LetsDoThis() {
          GRect rect = new GRect(100, 50, 100, 100 / PHI);
          rect.setFilled(true);
          rect.setColor(Color.RED);
          add(rect);
          GOval oval = new GOval(150, 50 + 50 / PHI, 100, 100 / PHI);
          oval.setFilled(true);
          oval.setColor(Color.GREEN);
          add(oval);
/** Constant representing the golden ratio */
     public static final double PHI = 1.618;
/* Standard Java entry point */
/* This method can be eliminated in most Java environments */
     public static void main(String[] args) {
          new FeltBoard().start(args);
     }//If anything i just typed i now feel heroic.
     // public static void
     Ok, sorry if the titles not good enough but i am a php programmer between begginer and intermediate but who wants to know java so i can say write a applet or something that can run from the desktop directly, also i wanted to lean OO and it in php confuses me infinately so i decided in the context of knowing nothing i might pick it up better thus java.
So most of what im doing is confusing to me so i just tried to type some code (Well the first 20 maybe lines i compiled and tested but after that i couldnt test so i just ran with it. Today i tried to compile and poof, nothing.
Any clues what im doing wrong and what i should do instead?
BTW this stuff feels weird, i feel like to take imput it should have a html form or something. I dunno.
also i dont even seem to have these acm packages im trying to import, any clue why?

Answer 1

jman888 wrote:
Ok, sorry if the titles not good enough but i am a php programmer between begginer and intermediate but who wants to know java so i can say write a applet or something that can run from the desktop directly, also i wanted to lean OO and it in php confuses me infinately so i decided in the context of knowing nothing i might pick it up better thus java. Ok?
So most of what im doing is confusing to me so i just tried to type some code (Well the first 20 maybe lines i compiled and tested but after that i couldnt test so i just ran with it. Today i tried to compile and poof, nothing.I assume you got a compile time error, if so next time you post a question incorporate this piece of information.
Any clues what im doing wrong and what i should do instead?I can take a stab at your code.
BTW this stuff feels weird, i feel like to take imput it should have a html form or something. I dunno.One step at a time
String yodawg;
yodawg ="I heard you like saxaphones  ";This is not an error but plain weird IMHO, if you are declaring a variable then initializing it, you might as well do it all on one line.
if (/* String? */username == "yes" || "Yes" || "YES"){
  testingthiscrap LeroyJenkins = new testingthiscrap
  LeroyJenkins.LetsDoThis()
}This code will not compile and should produce one of possible many compiler errors. The condition inside the if statement requires each condition to be independent of one another. e.g. (username == "yes" || username = "Yes" || username == "YES").
This also represents one of the most common errors presented to new comers. Equivalence of Objects such as Strings are compared using a method .equals() and not the term "==". The latter actually compares two Strings by the address stored in memory.
class runBy convention all Class names begin with a capital letter
Also it appears that the class run contains main method and an inner class in which itself contains a main method. I will conclude right here that you are biting off far more then you can chew. Start with the basics, e.g. Google for Java tutorials and start from "hello world" then make your way from there. Tackle one problem at a time and learn the concepts of the tutorial which will hopefully stay with you, as these fundamental concepts will be your foundation to development using the Java language.
Mel
Edited by: Melanie_Green, apparently CODE tags don't like me tonight