Member since Oct 01, 2008, follows 11 people, 0 public groups, 581 public bookmarks (582 total).
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Recent Bookmarks and Annotations
- ProQuest Information and Learning - 0596003137 - Perl Cookbook, 2nd Edition on 2009-08-21
- Java Programming Notes on 2009-08-01
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StringBuffer versus String - JavaWorld on 2009-07-29
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Using a
StringBufferfor concatenation can in fact produce code that is significantly faster than using aString. -
After the concatenation is performed on the
StringBufferobject, it must be converted back into aString. This is done with the call to thetoStringmethod at location 26. This method creates a newStringobject from the temporaryStringBufferobject. The creation of this temporaryStringBufferobject and its subsequent conversion back into aStringobject are very expensive. - 1 more annotations...
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HashMap (Java 2 Platform SE v1.4.2) on 2009-07-29
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The HashMap
class is roughly equivalent to Hashtable, except that it is
unsynchronized and permits nulls -
If multiple
threads access this map concurrently, and at least one of the threads
modifies the map structurally, it must be synchronized externally.
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Vector or ArrayList -- which is better? - JavaWorld on 2009-07-29
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both the
ArrayListandVectorhold onto their contents using anArray.
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Defining an Interface (The Java™ Tutorials > Learning the Java Language > Interfaces and Inheritance) on 2009-07-29
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access specifier
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Interfaces (The Java™ Tutorials > Learning the Java Language > Interfaces and Inheritance) on 2009-07-29
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There are a number of situations in software engineering when it is
important for disparate groups of programmers to agree to a "contract"
that spells out how their software interacts. -
an interface is a reference type, similar to a class, that can contain only
constants, method signatures, and nested types. - 2 more annotations...
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Abstract Methods and Classes (The Java™ Tutorials > Learning the Java Language > Interfaces and Inheritance) on 2009-07-29
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Abstract Classes versus Interfaces
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If an abstract class
contains only abstract method declarations, it should be declared as an interface instead. - 1 more annotations...
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Using Java Reflection on 2009-07-29
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The ability to examine and manipulate a Java class from within itself
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The reflection classes, such as
Method, are found in
java.lang.reflect. There are three steps that must be followed to use
these classes
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Subtyping (The Java™ Tutorials > Learning the Java Language > Generics) on 2009-07-29
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Surprisingly, the answer is "no", because
Box<Integer>andBox<Double>are not subtypes ofBox<Number>
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