seahi fe9964116e System.currentTimeMillis()

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..

demo51

案例6-1 模拟订单号生成

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Example01.java

5.1 String类

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Example02.java

5.1 String类

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Example03.java

5.1 String类

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Example04.java

5.1 String类

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Example05.java

5.1 String类

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Example06.java

5.1 String类

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Example08.java

StringBuffer 类

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Example09.java

对比String、StringBuilder、StringBuffer时间效率

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Example10.java

System.arraycopy

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Example11.java

System.currentTimeMillis()

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ShoppingCart.java

双十一购物车

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