cannot find main - it is there though

[dwilliams]

Hi,
I'm new to java and have run across a problem fairly soon after starting. Here's a bit of code I typed in. When I build the project, it does so with no issues. When I try to run it JCreator tells me it can find no 'main'. I checked everything but can find no fault in the syntax. Difficult language this after VB.
Any help much appreciated.
Thanks



import static java.lang.system.out;
import static java.lang.system.in;
import java.util.Scanner;
import java.util.Random;

class DTTTL {

public static void main(String args[]) {
Scanner myscanner = new Scanner(in);
out.print("Enter a number between 1 and 10");
int inputNumber = myscanner.nextInt();

int randomNumber = new Random.nextInt(10)+ 1;
if(randomNumber==inputNumber) {
out.println("*You win*);
}
out.println("That was a very good guess :-)");
out println("The random number was ");
out println(randomNumber + '.');
out println("Thanks for playing");

}
}

[hardwired]

My first attempt to compile your code resulted in:

C:\jexp>javac DTTTL.java
DTTTL.java:15: unclosed string literal
            out.println("*You win*);
                        ^
DTTTL.java:18: ';' expected
        out println("The random number was ");
                   ^
DTTTL.java:19: ';' expected
        out println(randomNumber + '.');
                   ^
DTTTL.java:19: not a statement
        out println(randomNumber + '.');
                                 ^
DTTTL.java:19: ';' expected
        out println(randomNumber + '.');
                                      ^
DTTTL.java:20: ';' expected
        out println("Thanks for playing");
                   ^
6 errors

Compiles okay now.

import static java.lang.System.out;
import static java.lang.System.in;
import java.util.Scanner;
import java.util.Random;

class DTTTL {

    public static void main(String args[]) {
        Scanner myscanner = new Scanner(in);
        out.print("Enter a number between 1 and 10");
        int inputNumber = myscanner.nextInt();

        // Was missing the method operator "()" below:
        int randomNumber = new Random().nextInt(10)+ 1;
        if(randomNumber==inputNumber){
            out.println("*You win*");
        }

        out.println("That was a very good guess :-)");
        // Missing "." operator below.
//        out println("The random number was ");
//        out println(randomNumber + '.');
//        out println("Thanks for playing");

    }
}

[dwilliams]

Thanks very much. Bloody syntax. Bummer.
Happy New Year to you

David

[gcampton]

JCreator gives same error messages, just make sure you have task view opened. (should be open by default)

[Eranga]

Is that JCreator not highlighted/underline incorrect syntax?

[dwilliams]

Hi,
My free version of JCreator does not highlight syntax errors in any way. Do you know of a free one that does? I need to progress a bit more before I fork out.
Thank you
David

[Eranga]

Use NetBeans. It have bunch of much useful features. Incorrect syntax highlighting is pretty cool.

[Eranga]

I think Eclipse do the same. But I don't know exactly, I've never use it. Check it out if you want to use. By my experience I recommended NetBeans.

[dwilliams]

Been using NetBeans all day, it's brilliant.
Thanks very much
David

[gcampton]

Does that Netbeans have automatic error alternatives... pfftt

use eclipse :P

[dwilliams]

Well Netbeans is much better than the free JCreator. Maybe I should try Eclipse as well.

Thanks for the heads up.

[Eranga]

Does that Netbeans have automatic error alternatives... pfftt

Of course. NetBeans shows you a list of alternative on the notification balloon on right hand side of the source editor window.

[gcampton]

Of course. NetBeans shows you a list of alternative on the notification balloon on right hand side of the source editor window.

that's not autocompleted though

Lol here come the flame wars...

[Eranga]

that's not autocompleted though

Lol here come the flame wars...

It's not fully automated, but using a single click you can fix/replace text. :p

[Tolls]

Fight!
Fight!
Fight!
:)

[gcampton]

I use eclipse for 5 years!!
much better than any other IDES

Better than notepad? Ive been using it for 16 years.... so it must be the best

:D

[gcampton]

ok now I'm just getting silly.

[Eranga]

Better than notepad? Ive been using it for 16 years.... so it must be the best

:D

For 16 year? I wonder when you start to work on with Java.... If I'm correct Java release there first complete API, JDK 1.0 in 1996, January 23.... :p

[Eranga]

I agreed with you gcampton, that notepad is the best to dig into first step of Java. Working on with fundamentals on notepad helps a lot to improve skills in may ways. But working on with industrial level applications you must need an advance IDE, isn't it?