Adding initial support to upgrade Java

Author: jabrena

modules/java.sh

@@ -65,6 +65,11 @@ elif [[ -n "$JAVA_HOME" ]] && [[ -x "$JAVA_HOME/bin/java" ]];  then
     echo "Found java executable in JAVA_HOME"
     JAVA_REAL_EXE="$JAVA_HOME/bin/java"
 
+    if [ ! -d "$JAVA_PATH_NEW" ]; then
+        echo "But upgrading Java version"
+        echo
+    fi
+
 else
     echo "No java detected"