notepad++ compile 有問題

先講compile, 如果hotkey行完以下這句, 就算有error都睇唔到, 個dos一下子就關掉
有甚麼辨法可以睇到error message?
"javac" "$(FULL_CURRENT_PATH)"




然後是執行
當行完以下指令, 就會出現下面的文字, 唔知點解行唔到, 這是已經compile好, 有一個Q.class係度
"java" "$(CURRENT_DIRECTORY)$(NAME_PART)"

"java" "R:\Q"
Process started >>>
java.lang.NoClassDefFoundError: R:\Q
Caused by: java.lang.ClassNotFoundException: R:\Q
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: R:\Q.  Program will exit.
Exception in thread "main" <<< Process finished.

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