Is there a way to run short bits of Java code without compiling?

Question

Is there a way to run or simulate running Java statements (kind of like IDLE - the Python GUI) without compiling and running the executable? I want to quickly test statement

Answer 1

As of Java 11 (JEP 330) it is now possible to run Java files directly with the java tool:

java Factorial.java 3 4 5

is informally equivalent to

javac -d  Factorial.java
java -cp  Factorial 3 4 5

Java also added support for "shebang" files.

For more details see: http://openjdk.java.net/jeps/330