TeaVM vs. GWT
TeaVM is a Java-to-JavaScript transpiler, which includes a SPA framework called Flavour.GWT is a Java source code to JavaScript transpiler.
TeaVM/Flavour
TeaVM can transform a website with linked Java code into HTML and JavaScript, deployable as a WAR file. It has plugins for IDEA and NetBeans. TeaVM includes a single-page app framework called Flavour. Flavour has numerous features to make app development easier:- HTML Templates with binding to Java fields and methods
- Routing between pages
- Components (built-in and user-created)
- Effortless calls to JAX-RS REST Services
TeaVM works on Java bytecode, so it supports any JVM language.
TeaVM is speedy, with build times measured in seconds.
GWT
Google Web Toolkit (GWT) is a transpiler for Java Code, and a framework for web app development.GWT works on source code, so it only supports Java 8.
GWT is slow, with build times measured in minutes.
Comparison Chart
| Feature | TeaVM | GWT |
|---|---|---|
| Threading | ✔ | ✘ |
| 3s Startup | ✔ | ✘ |
| Multiple IDE Support | ✔ | ✘ |
| Fast Builds | ✔ | ✘ |
| Designer-Friendly HTML/CSS | ✔ | ✘ |
| Code in the #1 Language | ✔ | ✔ |
| Work With Any JVM Language | ✔ | ✘ |
| Debug in the Browser | ✔ | ✔ |
| Routing | ✔ | ✘ |
| Built-In Localization | ✘ | ✔ |
| Become a Full Stack Developer | ✔ | ✔ |