Installer problem

[LTLightning]

Tried with recommended and latest.

 

If I open the file I downloaded, cmd opens a split second and says: Could not find or load main class

If I extract it and run the .java, nothing happens.

 

Using Java 64Bit. Help please, new to the 1.6 installation.

 

 

[LTLightning]

Nevermind! All fixed! Sorry about that.

[Rosmario]

How did you fix? I'm having the same problem 

[JaredBGreat]

Nevermind! All fixed! Sorry about that.

 

How did you solve this?  I've been getting this from NetBeans a lot / consistently (still can't figure out how to get this to work with Eclipse, though it's claimed to be easier, I don't know what directory to use and keep seeing an empty project).

 

EDIT: I was getting that, now I get this:

 

run:
Exception in thread "main" java.lang.ExceptionInInitializerError
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:140)
at java.lang.reflect.Field.acquireFieldAccessor(Field.java:949)
at java.lang.reflect.Field.getFieldAccessor(Field.java:930)
at java.lang.reflect.Field.set(Field.java:680)
at Start.main(Start.java:19)
Caused by: java.lang.RuntimeException: Uncompilable source code - package com.google.common.collect does not exist
at net.minecraft.client.Minecraft.<clinit>(Minecraft.java:124)
... 7 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

 

Earlier it would start, show the forge "Setting up your Minecraft environment" progress bars, then crash with a message, "Minecraft can't run in this configuration."

 

(Still no clue what to do with Eclipse to even see any code!)