Java：找不到或加载主类

Question

Error:

Could not find or load main class CLASSNAME

Command:

java -cp "Path to MAIN class" "MAINCLASSNAME"

When I copy and paste the path, it is correct and when I go to the path and run the command it works fine.

So can anyone help me and tell me what is going on here and how to fix it?

java -cp /usr/home/dir1/2014Dir/Team1/Problem1/05:09:55/ Prob1
Error: Could not find or load main class Prob1
$

ls -l /usr/home/PCWSA/2014ConDir/Team1-14/Problem1/05:09:55/03-21-14_07.05.17:
total 4
-rw-r--r--  1 PCWSA  PCWSA  1359 Mar 21 07:05 Prob1.class

Answer 1

Example to run the program ..

To compile the program go to src directory in command line and type the following

C:/blah/src > javac com\\sample\\MAINCLASSNAME.java

To run the program use the following command

C:/blah/src > java -cp . com.sample.MAINCLASSNAME

Use the command javac -d to specify the place where u want to generate your class files .. Then run the java command from that directory.

Answer 2

Based on your last edit, it looks like you're trying find your .class file in the wrong directory

You're trying to execute it on:

/usr/home/dir1/2014Dir/Team1/Problem1/05:09:55/

But the file is on:

/usr/home/PCWSA/2014ConDir/Team1-14/Problem1/05:09:55/03-21-14_07.05.17:

So just use that directory instead:

java -cp "/usr/home/PCWSA/2014ConDir/Team1-14/Problem1/05:09:55/03-21-14_07.05.17:" Prob

Answer 3

So I figured what the problem was! My path to the MAINCLASS contained dots '.' and that was causing the issue, when I renamed the folders it worked fine. I hope this is going to be helpful.