Question

I have an app that gets the content of an html file.

Lets say the text of the page is:

String[] arr = new String[] {"!","@","#"};
for (String str :  arr) {
write(str);
}

Can I somehow compile this text and run the code within my app?

Thanks

Answer 1

Use Janino. It’s a java runtime in-memory compiler. Way easier than BCEL and the likes.

From the homepage:

“What is Janino?

Janino is a super-small, super-fast Java™ compiler. Not only can it compile a set of source files to a set of class files like the JAVAC tool, but also can it compile a Java™ expression, block, class body or source file in memory, load the bytecode and execute it directly in the same JVM. Janino is not intended to be a development tool, but an embedded compiler for run-time compilation purposes…