Java was designed from the ground up to use 16-bit(2 byte) Unicode characters, which wa...
发简信
IP属地：重庆
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2020-03-22
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关于使用Exceptions的几点小贴士
1. Exception handling is not supposed to replace a simple test.The moral is: Use except...
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如何在静态方法中获取当前类名
When you produce logging or debugging messages, you often want to include the name of t...
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内部类与外部类的关系一
Traditionally, a method could refer to the data fields of the object invoking the meth...
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python字典迭代顺序问题
Before Python 3.6 a regulardictdid not track the insertion order, and iterating over i...
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我们需要在自己的类中实现clone方法吗？
Should you implement clone in your own classes? If your clients need to make deep copi...
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Interfaces and Abstract Classe(有了抽象类，为什么还需要接口？)
If you read the section about abstract classes in Chapter 5, you may wonder why the des...
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引用值，而不是变量（Lambda）
既成事实上的final是指只能给该变量赋值一次。换句话说，Lambda表达式引用的是值，而不是变量。 Lambda表达式中引用既成事实的final变量： Stringname...
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java对象比较之instanceof与getClass的使用规则
two distinct scenarios: • If subclasses can have their own notion of equality, then the...
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