updated java to version 24

epicbox-java/24/Dockerfile

@@ -0,0 +1,24 @@
+FROM openjdk:24-slim
+
+ARG GSON_LIB_URL=https://repo1.maven.org/maven2/com/google/code/gson/gson/2.10.1/gson-2.10.1.jar
+ARG JAVAX_JSON_API_LIB_URL=https://repo1.maven.org/maven2/javax/json/javax.json-api/1.1.4/javax.json-api-1.1.4.jar
+ARG JAVAX_JSON_LIB_URL=https://repo1.maven.org/maven2/org/glassfish/javax.json/1.1.4/javax.json-1.1.4.jar
+ARG JSON_SIMPLE_LIB_URL=https://repo1.maven.org/maven2/com/googlecode/json-simple/json-simple/1.1.1/json-simple-1.1.1.jar
+
+ARG JAVA_LIB_PATH=/usr/local/lib/java
+
+ENV CLASSPATH=.:$JAVA_LIB_PATH/*
+
+RUN mkdir -p $JAVA_LIB_PATH
+
+ADD $GSON_LIB_URL $JAVA_LIB_PATH
+ADD $JAVAX_JSON_API_LIB_URL $JAVA_LIB_PATH
+ADD $JAVAX_JSON_LIB_URL $JAVA_LIB_PATH
+ADD $JSON_SIMPLE_LIB_URL $JAVA_LIB_PATH
+
+RUN chmod og+r $JAVA_LIB_PATH/*
+
+COPY java_lookup_main.sh /usr/local/bin/java_lookup_main.sh
+RUN chmod +x /usr/local/bin/java_lookup_main.sh
+
+RUN useradd -M -d /sandbox sandbox

epicbox-java/24/java_lookup_main.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+# Grep *.class files in the given directory to find one with psvm method defined
+# Usage: java_lookup_main.sh DIRECTORY_PATH
+
+PSVM_REGEX="public static( final)? void main\(java\.lang\.String(\[\]|\.\.\.)\)"
+
+shopt -s nullglob
+for f in "$1"/*.class; do
+    if javap -p "$f" 2> /dev/null | grep -Pq "$PSVM_REGEX"; then
+        filename=$(basename "$f")
+        echo -n "${filename%.*}"
+        exit 0
+    fi
+done
+exit 1

epicbox-kotlin/Dockerfile

@@ -1,4 +1,4 @@
-FROM openjdk:18.0.2-slim
+FROM openjdk:24-slim
 
 ARG COMPILER_URL=https://github.com/JetBrains/kotlin/releases/download/v2.0.0/kotlin-compiler-2.0.0.zip
 ARG KOTLINX_ATOMICFU_JVM_URL=https://repo1.maven.org/maven2/org/jetbrains/kotlinx/atomicfu-jvm/0.25.0/atomicfu-jvm-0.25.0.jar