We used a total of builder mode, the state mode, command mode, the policy mode, single mode these five design patterns. This course is designed to develop a plurality of panels of a calculator. Not only for everyday life, " standard" panel for science and engineering computing " science-based" panel, for the calculation of " programmer" panel to programmers, even inspired to develop the learning of mathematics for high school students " special type" panel, there are benefit them check their math homework answers and answers to tests. The calculator achieved her point standard drop-down menu, science-based, programmers and characteristics of different type and other options section of the calculator panel. This calculator implements the election of the button, the button showing topaz hue gradient colors. The calculator icon in the top left corner to achieve a custom function. Keywords: Builder mode status Mode Command Mode Strategy Mode single mode

Calculator
..........\.classpath
..........\.project
..........\.settings
..........\.........\org.eclipse.core.resources.prefs
..........\.........\org.eclipse.jdt.core.prefs
..........\bin
..........\...\BuilderPattern
..........\...\..............\Builder.class
..........\...\..............\BuildFeature.class
..........\...\..............\BuildProgrammer.class
..........\...\..............\BuildScience.class
..........\...\..............\BuildTypical.class
..........\...\..............\Director.class
..........\...\Client
..........\...\......\MyCalculator.class
..........\...\CommandPattern
..........\...\..............\Activation.class
..........\...\..............\Command.class
..........\...\..............\Command2radical.class
..........\...\..............\CommandFactorization.class
..........\...\..............\CommandFraction.class
..........\...\..............\CommandGCDLCM.class
..........\...\..............\CommandSolve.class
..........\...\GUI
..........\...\...\BasePanel.class
..........\...\...\CommonShowPanel.class
..........\...\...\FeatureButtonPanel.class
..........\...\...\FeatureShowPanel.class
..........\...\...\GuiFacade$1.class
..........\...\...\GuiFacade$2.class
..........\...\...\GuiFacade$3.class
..........\...\...\GuiFacade$4.class
..........\...\...\GuiFacade$5.class
..........\...\...\GuiFacade$6.class
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..........\...\...\MyButton.class
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..........\...\...\ProgrammerButtonPanel$4.class
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..........\...\...\ProgrammerButtonPanel$6.class
..........\...\...\ProgrammerButtonPanel$7.class
..........\...\...\ProgrammerButtonPanel$8.class
..........\...\...\ProgrammerButtonPanel$9.class
..........\...\...\ProgrammerButtonPanel.class
..........\...\...\ProgrammerShowPanel.class
..........\...\...\ScienceButtionPanel$1.class
..........\...\...\ScienceButtionPanel$10.class
..........\...\...\ScienceButtionPanel$11.class
..........\...\...\ScienceButtionPanel$12.class
..........\...\...\ScienceButtionPanel$13.class
..........\...\...\ScienceButtionPanel$14.class
..........\...\...\ScienceButtionPanel$15.class
..........\...\...\ScienceButtionPanel$16.class
..........\...\...\ScienceButtionPanel$17.class
..........\...\...\ScienceButtionPanel$18.class
..........\...\...\ScienceButtionPanel$19.class
..........\...\...\ScienceButtionPanel$2.class
..........\...\...\ScienceButtionPanel$20.class
..........\...\...\ScienceButtionPanel$21.class
..........\...\...\ScienceButtionPanel$22.class
..........\...\...\ScienceButtionPanel$23.class
..........\...\...\ScienceButtionPanel$24.class
..........\...\...\ScienceButtionPanel$25.class
..........\...\...\ScienceButtionPanel$26.class
..........\...\...\ScienceButtionPanel$27.class
..........\...\...\ScienceButtionPanel$28.class
..........\...\...\ScienceButtionPanel$29.class
..........\...\...\ScienceButtionPanel$3.class
..........\...\...\ScienceButtion

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