java support

docker/execute

@@ -50,6 +50,9 @@ case "$lang" in
 "nasm" | "asm")
     bin=executor_nasm
     ;;
+"java")
+    bin=executor_java
+    ;;
 *)
     echo "invalid language"
     exit
@@ -72,6 +75,7 @@ docker run \
     -v $dir/executors/r:/executor_r:ro \
     -v $dir/executors/php:/executor_php:ro \
     -v $dir/executors/nasm:/executor_nasm:ro \
+    -v $dir/executors/java:/executor_java:ro \
     piston \
     runuser \
         -l runner \

docker/executors/java

@@ -0,0 +1,5 @@
+cp /*.code .
+name=$(cat $1 | grep -Eo 'public class ([A-Za-z0-9]+)' | cut -d' ' -f3)
+mv $1 $name.java
+timeout -s KILL 10 javac $name.java
+timeout -s KILL 3 java $name ${@:3}