Fix bootstrap header (#234)

Author: 0legg

misc/boostrap_header.sh

@@ -3,12 +3,14 @@ _in_path kscript && echo "kscript is already installed at $(which kscript)" 1>&2
     function echo_and_eval() { echo "$ $@" 1>&2; eval "$@" 1>&2; }
     _in_path sdk || {
         curl "https://get.sdkman.io" | bash 1>&2 && \
-            echo_and_eval source "$"SDKMAN_DIR/bin/sdkman-init.sh
+            echo_and_eval source "$SDKMAN_DIR/bin/sdkman-init.sh"
     }
 
     sdkman_auto_answer=true
 
+    _in_path java || echo_and_eval sdk install java
     _in_path kotlin || echo_and_eval sdk install kotlin
     _in_path gradle || echo_and_eval sdk install gradle
-    echo_and_eval sdk install kscript
-}
+    _in_path kscript || echo_and_eval sdk install kscript
+    echo_and_eval source "$SDKMAN_DIR/bin/sdkman-init.sh"
+}