Java cannot find or load main class?

Question

I cannot resolve the current issue I am experiencing with Java. I am familiar with PHP/MySql, but not with Java.

Here is my Java code:

package day1.examples;

public class MyFirstClass
{
    public static void main(String[] args)
    {
        System.out.println('Hello World');
    }
}

Problem: When I go to run the program as Java, I receive the following warning:

Then, I am receiving the following error in my console: Error: Could not find or load main class day1.examples.MyFirstClass

Question: Why is the above code (which I assume is appropriate) not working? Furthermore: Why am I receiving errors?

Please note: This is my first day using Java

EDIT (problems):

Because something is wrong in the configurations. Right click the project , select properties and see java build path. Looks like you don't have the current folder . in the classpath. — ACV
– ACV, Commented Sep 10, 2015 at 17:33
Double qoute your Hello world. Singel is for char and nog string. — chillworld
– chillworld, Commented Sep 10, 2015 at 17:34
Did you set correctly your JAVA_HOME environment variable? Probably that's giving you the error. Or might have something to do not 100% sure — Frakcool
– Frakcool, Commented Sep 10, 2015 at 17:36

Reimeus · Accepted Answer · 2015-09-10 17:41:34Z

4

Remove the currently bound JRE from the project & add a new system library using a JRE that exists on your local system.

answered Sep 10, 2015 at 17:41

Reimeus

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2 Comments

Robert Tossly Over a year ago

This has resolved my issue! Everything is working fine now! Best regards!

Robert Tossly Over a year ago

I have added "JRE system library[jdk1.8.0_60]"

NitrogenReaction · Accepted Answer · 2015-09-10 17:36:29Z

1

The reason it will not work is because the compilation is failing. The reason it is failing it because you used single quotes (') to enclose "Hello World". You should use double quotes (") as you are trying to indicate a String, single quotes are used for individual characters.

answered Sep 10, 2015 at 17:36

NitrogenReaction

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1 Comment

Robert Tossly Over a year ago

Unfortunately, I have changed the quotes to doubles, yet the same problem exists.

Shmulik Klein · Accepted Answer · 2015-09-10 17:36:30Z

0

You should tell eclipse which Main calss you want to run. Go to Run --> Run Configurations.. and select the main class to run.

answered Sep 10, 2015 at 17:36

Shmulik Klein

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Comments

Mark Jeronimus · Accepted Answer · 2015-09-11 16:39:29Z

0

System.out.println('Hello World'); is not valid Java. Try System.out.println("Hello World");

answered Sep 11, 2015 at 16:39

Mark Jeronimus

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