updated java

docker/executors/java

@@ -1,5 +1,5 @@
 cp /*.code interim.java
-name=$(cat interim.java | grep -Eo 'public class ([A-Za-z0-9]+)' | cut -d' ' -f3)
+name=$(cat interim.java | grep -Eo 'public\s+class\s+([A-Za-z0-9]+)' | cut -d' ' -f3)
 mv interim.java $name.java
 timeout -s KILL 10 javac $name.java
 timeout -s KILL 3 java $name ${@:3}

readme.md

@@ -13,7 +13,7 @@ from from EMKC contests and challenges. It's also used in the Engineer Man Disco
 - `docker/execute <lang> <path to file>`
 
 #### Supported Languages
-Currently python2, python3, c, c++, go, node, ruby, r, c#, nasm, and php is supported.
+Currently python2, python3, c, c++, go, node, ruby, r, c#, nasm, php, and java is supported.
 
 #### Principle of Operation
 Piston utilizes Docker as the primary mechanism for sandboxing. There is a small API written in Go which takes