liveBook · Manning

Next execution line

As explained in Troubleshooting Java, Second Edition

The next execution line is the line of source code that an application will execute next, which may differ from the immediately following line because of control flow or exceptions.

The next execution line is the line of code the application will execute next. It may differ from the immediately following source line when control flow changes, especially after an exception. section 2.2.2

Use the distinction while navigating code with a debugger: step over follows the next execution line rather than assuming execution continues on the next numbered line. section 2.2.2

An exception changes the path

If execution pauses on line 12, line 13 is the next source line. When line 12 completes normally, execution proceeds to line 13; when it throws an exception, execution continues at line 18 instead. section 2.2.2

How Troubleshooting Java, Second Edition covers it

How deep it goes
Defines the distinction and demonstrates exception-driven flow, but does not explain runtime control-flow internals.
Examples
Uses lines 12, 13, and 18 to contrast normal continuation with an exception path.
What you can do after
Apply it via a debugger to predict where step over will pause next, including after an exception.
How it connects
Connects debugger navigation with step over, control flow, exceptions, and execution stack traces.
Cover of Troubleshooting Java, Second Edition
liveBookmanning.com
Read Troubleshooting Java, Second Edition on liveBook Get the book at manning.com

This explainer was generated by Manning's knowledge graph from the text of Troubleshooting Java, Second Edition. The section links point to the parts of the book it draws on.