Java News from Monday, January 10, 2005

jutils.com has released lint4j 0.7.1, a free-beer "static Java source code analyzer that detects locking and threading issues, performance and scalability problems, and checks complex contracts such as Java serialization by performing type, data flow, and lock graph analysis." Version 0.7.1 adds nine new warnings including:

• equals() is called on an array type
• Strings are compared using ==
• A class overrides clone() but does not implement Cloneable
• clone() contains a constructor call of the enclosing type
• A string contains a hardcoded newline instead of using the system property
• An abstract class does not contain at least one abstract method
• An abstract class does not contain at least one method, and may be replaced by an interface
• Methods which introduce operating system dependencies (System.getenv(), Runtime.exec())

Werner Randelshofer has released the Quaqua Look and Feel 2.4, "an extension for Apple's implementation of the Aqua Look for Swing. Quaqua aims at fixing inconsistencies between user interface elements implemented in Swing and those of native Mac OS X applications. To achieve this, Quaqua selectively replaces UI elements of Apples Aqua Look And Feel with elements of its own." Quaqua is dual licensed under the BSD license model and the LGPL. Java 1.3 or later and Mac OS X 10.2 or later are required. This release improves support for Java 1.3 and Panther.