Example of a simple Java method in COMSOL’s Application Builder (runs in trial, but not saveable):
The save restriction is enforced by a conditional check in COMSOL’s Java/C++ core. Attempting to save triggers a dialog: “Saving models is disabled in the trial version.” Sometimes users refer to the Java code written in the COMSOL Application Builder or the LiveLink™ for MATLAB scripting. In the trial version, you can write and run such code, but you cannot save the application or model that contains it. comsol trial code
// This runs but cannot be saved to an MPH file in trial mode public double[] solveHeatEquation() model.component("comp1").physics("ht").feature("ht1").run(); return model.result().numerical("peval1").getReal(); Example of a simple Java method in COMSOL’s
| Feature | Trial | Full | |---------|-------|------| | Solve & compute | ✅ Yes | ✅ Yes | | Export data/plots | ✅ Yes | ✅ Yes | | Save model file | ❌ Disabled | ✅ Yes | | COMSOL Server deployment | ❌ No | ✅ Yes | | Export compiled app | ❌ No | ✅ Yes | // This runs but cannot be saved to