Error: Could not find or load main class (netbeans and java)

Question

I am new to Java, but have some programming experience. I am reading a book on how to program in the Java language. My progress is impeded by my lack of knowledge with NetBeans and Java. My particular problem is that I am not seeing proper output in my output box. Regardless of the code.

Here is an example. I am sure I am missing a minor detail:

public class Weather
{
    public static void main(String[] arguments)
    {
        float fah = 86;
        System.out.println(fah + " degrees Fahrenheit is ...");
        //To conver fahrenheit to Celsius
        //Begin by subtracting 32
        fah = fah - 32;
        //divide the answer by 9
        fah = fah / 9;
        //multiply that answer by 5
        fah = fah * 5;
        System.out.println(fah + "degree Celsius is ...");

        float cel = 32;
        System.out.println(cel + "degress Celsius is ...");
        //To convert Farhenheit to celsius
        //begin by multiplying 9
        cel = cel * 9;
        //divide answer by 5
        cel =cel / 5;
        //add 32 to the answer
        cel = cel + 32;
        System.out.println(cel + "degrees Farenheit");

        }
}

OUTPUT BOX:

run:
Error: Could not find or load main class weather.Weather
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

check out this http://stackoverflow.com/questions/3537769/cant-find-main-class-in-netbeans-6-9 — LeandreM, Sep 15 '13 at 16:26
That did help. The folders of those name do not exist therefore that could not be the problem — Ross P., Sep 15 '13 at 16:47
Right click project > properties > run > browse for main class (It was lower case?????) I don't remember doing that. — Ross P., Sep 15 '13 at 16:50

score 8 · Answer 1 · edited Jan 09 '15 at 14:42

8

Close netbeans and then delete this directory C:\Users\Your name here\AppData\Local\NetBeans\Cache

Start Netbeans again and let it read the project.

Test project. Run project. It should work fine.

edited Jan 09 '15 at 14:42

Community

1
1

answered Jan 31 '14 at 17:20

Shubham Das

1,257
11
10

score 0 · Answer 2 · answered Nov 02 '16 at 16:01

0

I had the same problem and was able to fix it by setting the paths via cmd line:

cd C:\Program Files\Java\jdk*version*\bin>cd\
set path="C:\Program Files\Java\jdk*version*";
set classpath="C:\Program Files\Java\jdk*version*\lib\rt.jar";

answered Nov 02 '16 at 16:01

TaylorJ

41
3

score 0 · Answer 3 · answered Jun 07 '19 at 23:32

0

This worked for me (Java 8 on Netbeans, June 2019): File > Project Properties > Run > Application Class > Browse > and try a different application class entry

answered Jun 07 '19 at 23:32

Ron Pitts

1
2

Error: Could not find or load main class (netbeans and java)

3 Answers3

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