InMemoryJavaCompiler

Samples with utility classes to compile java source code in memory

After taking huge effort to look for example on the internet and found nothing work. I decided to create a very simple version.

E.g.:

StringBuffer sourceCode = new StringBuffer();
sourceCode.append("package org.mdkt;\n");
sourceCode.append("public class HelloClass {\n");
sourceCode.append("   public String hello() { return \"hello\"; }");
sourceCode.append("}");

Class<?> helloClass = InMemoryJavaCompiler.compile("org.mdkt.HelloClass", sourceCode.toString());

Alternatively, if you want to load several (dependent) classes:

String cls1 = "public class A{ public B b() { return new B(); }}";
String cls2 = "public class B{ public String toString() { return \"B!\"; }}";
    
InMemoryJavaCompiler compiler = new InMemoryJavaCompiler();
compiler.addSource("A", cls1);
compiler.addSource("B", cls2);
Map<String,Class<?>> compiled = compiler.compileAll();

Class<?> aClass = compiled.get("A");

Artifact is pushed to Sonatype OSS Releases Repository

https://oss.sonatype.org/content/repositories/releases/

Maven dependency:

<dependency>
    <groupId>org.mdkt.compiler</groupId>
    <artifactId>InMemoryJavaCompiler</artifactId>
    <version>1.2</version>
</dependency>