Unable to compile java class file in cmd

I am in c:\new\control folder and want to execute c:\hello.java

I am trying c:\new\control> javac c:\hello.java

Its creating class file but c:\new\control> java hello is giving me Error:could not find o load main class hello

In simple way i wan ask , i have class file in c:\ (say c:\hello.class)
I am in c:\user, how can i execute it???

By default, the .class file will be generated alongside the .java file. Options:

Use -d . when compiling to generate the classes relative to the current directory (including creating subdirectories for packages):
```
> javac -d . c:\hello.java
> java hello
```

Specify a classpath when running:

> java c:\hello.java
> java -cp c:\ hello

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