Home/ Questions/Q 5941253
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-22T16:05:02+00:00

There is a part of our application that does this… int x = DOM.getElementById(x).getPropertyInt(value);

  • 0

There is a part of our application that does this…

int x = DOM.getElementById("x").getPropertyInt("value");
int y = DOM.getElementById("y").getPropertyInt("value");
int w = DOM.getElementById("w").getPropertyInt("value");
int h = DOM.getElementById("h").getPropertyInt("value");

Every call to DOM.getElemendById("something") returns null (which I expect as I removed them) but calling .getPropertyInt("value") on that return value of null is not causing a NullPointerException. In dev mode I am able to step through all of these statements and watch x,y,w,h all be assigned to zero. If I evaluate one of these statements in the Intellij evaluator in the debugger there is a NullPointerException thrown.

Doesn’t this seem slightly insane to anybody else?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The docs say:

    Exceptions: try, catch, finally and user-defined exceptions are supported as 
normal, although Throwable.getStackTrace() is not meaningfully supported in 
production mode.

Note: Several fundamental exceptions implicitly produced by the Java VM, most 
notably NullPointerException, StackOverflowError, and OutOfMemoryError, do not 
occur in production mode as such. Instead, a JavaScriptException is produced for 
any implicitly generated exceptions. This is because the nature of the underlying
JavaScript exception cannot be reliably mapped onto the appropriate Java 
exception type.
    • 0