What is wrong with this code?

**dannyboi** · July 22nd, 2012, 04:13 PM

package javaapplication11;

public class HelloApp2 {
{
public static void main (String [] args)
{
Greeter myGreeterObject = new Greeter () ;
myGreeterObject.sayHello();
}

}

}

I can't seem to find anything wrong , but the compiler says that it doesn't have a main method?

**dannyboi** · July 22nd, 2012, 05:18 PM

package javaapplication11;

import javax.swing.JOptionPane;

public class Greeter
{

public void sayHello()
{
(JOptionPAne.showMessageDialog(null
"Hello,World", "Greeter",
JOptionPane.INFORMATION_MESSAGE );
}
}

**copeg** · July 22nd, 2012, 05:43 PM

Please read the forum rules. You have posted 2 topics that are basically the same. I have merged your two posts for you, but please avoid doing this again, and please use the code tags (instructions of which are again in the forum rules)

**dannyboi** · July 22nd, 2012, 07:51 PM

public static void main (String [] args)
{
package javaapplication11;

public class HelloApp
{
static String helloMessage;

public static void main (String [] args)
{

helloMessage = "Hello, World !";
System.out.println(helloMessage);
}
}

**derekxec** · July 22nd, 2012, 08:35 PM

public static void main(String[] args) {
}

is the main method why do you have 2 of them?

**copeg** · July 22nd, 2012, 08:46 PM

@dannyboi, this is a warning. Please do not continue to force moderators to merge your threads - keep your questions regarding this topic - whatever variations of your code they may be - in this thread only. Otherwise, you will force the moderating team to take further action

**hackthisred** · July 23rd, 2012, 11:24 PM

There is a lot wrong with your code lol

For one it won't do anything, because you are calling methods that don't exist. Here is a good example that accomplishes something similar to what I believe you were trying to accomplish.

import java.util.Scanner;
 
 
public class HelloWorldObject {
 
	private void sayHello(String name)
	{
		String greeting = "\nHello "+ name +" welcome to JAVA!!!";
		System.out.println(greeting); 
	}
 
	public static void main(String[] args)
	{
		Scanner keyboard = new Scanner(System.in);
		System.out.println("Please enter your name...");
		new HelloWorldObject().sayHello(keyboard.next());
	}
}

**Badger191** · July 24th, 2012, 12:31 AM

Originally Posted by dannyboi

public static void main (String [] args)
{
package javaapplication11;

public class HelloApp
{
static String helloMessage;

public static void main (String [] args)
{

helloMessage = "Hello, World !";
System.out.println(helloMessage);
}
}

You have two main methods, then your class identifier, that's why your error is being thrown.

public class Random {
 
	public static void main(String[] args) {
		//Here's out string instance which we use in the system.out object
		String hello = "Hello!";
		System.out.println(hello);
	}
 
}

p.s: You don't need a static string for your helloMessage instance.

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