observer link: -:http://www.oodesign.com/observer-pattern.html prototype link: -: http://www.oodesign.com/prototype-pattern.html -: http://www.tutorialspoint.com/design_pattern/prototype_pattern.htm

object pool link: -: http://www.oodesign.com/object-pool-pattern.html -: http://www.javatpoint.com/object-pool-pattern

builder link: -: http://www.oodesign.com/builder-pattern.html -: http://www.tutorialspoint.com/design_pattern/builder_pattern.htm

factory link: -: http://www.oodesign.com/factory-pattern.html -: http://www.tutorialspoint.com/design_pattern/factory_pattern.htm

factory method link: -: http://www.oodesign.com/factory-method-pattern.html

abstract factory link: -: http://www.oodesign.com/abstract-factory-pattern.html -: http://www.tutorialspoint.com/design_pattern/abstract_factory_pattern.htm

chain of responsibility link: -: http://www.oodesign.com/chain-of-responsibility-pattern.html -: http://www.tutorialspoint.com/design_pattern/chain_of_responsibility_pattern.htm

template method link: -: http://www.oodesign.com/template-method-pattern.html

command link: -: http://www.oodesign.com/command-pattern.html -: http://www.tutorialspoint.com/design_pattern/command_pattern.htm

iterator link: -: http://www.oodesign.com/iterator-pattern.html -: http://www.tutorialspoint.com/design_pattern/iterator_pattern.htm

strategy link: -: http://www.oodesign.com/strategy-pattern.html -: http://www.tutorialspoint.com/design_pattern/strategy_pattern.htm

visitor link: -: http://www.oodesign.com/visitor-pattern.html -: http://www.tutorialspoint.com/design_pattern/visitor_pattern.htm

bridge link: -: http://www.oodesign.com/bridge-pattern.html -: http://www.tutorialspoint.com/design_pattern/bridge_pattern.htm

null object link: -: http://www.oodesign.com/null-object-pattern.html -: http://www.tutorialspoint.com/design_pattern/null_object_pattern.htm

adapter link: -: http://www.oodesign.com/adapter-pattern.html -: http://www.tutorialspoint.com/design_pattern/adapter_pattern.htm

bridge link: -: http://www.oodesign.com/bridge-pattern.html -: http://www.tutorialspoint.com/design_pattern/bridge_pattern.htm

composite link: -: http://www.oodesign.com/composite-pattern-shapes-example-java-sourcecode.html -: http://www.tutorialspoint.com/design_pattern/composite_pattern.htm

flyweight link: -: http://www.oodesign.com/flyweight-pattern.html -: http://www.tutorialspoint.com/design_pattern/flyweight_pattern.htm

memento link: -: http://www.oodesign.com/memento-pattern.html -: http://www.tutorialspoint.com/design_pattern/memento_pattern.htm

proxy link: -: http://www.oodesign.com/proxy-pattern.html -: http://www.tutorialspoint.com/design_pattern/proxy_pattern.htm