Jigsaw 0.5.9

Major Features:

1. A simple one-window interface.
2. Programs are compiled and executed with a single click, removing the irritation of students executing old versions of programs.
3. Errors are displayed in a convenient graphical format.
4. After successful compilation, Jigsaw proceeds to analyze the program for common programming errors and stylistic problems, such as doing integer division on constants ("1/2"), omitting private for instance variables, or labeling intended constructors with a void return type. These warnings can be disabled through the Preferences window.

Enhancements:

• Added warning to identify when == or != is used to compare to a string constant. Feature: Added warning to identify when the equals method is used to compare to null. Bug fix: Cut/Copy/Paste didn't work when initiated from the menus or the toolbar.
• Bug fix: The syntax highlighting system would color "+1" as bright red, indicating an error. This would happen most often when the user enters an expression like "x+1" with no spaces.