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哈希表这个数据结构想必大多数人都不陌生,而且在很多地方都会利用到hash表来提高查找效率。在Java的Object类中有一个方法: public native int hashCode(); 根据这个方法的声明可知,该方法返回一个int...
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转载: 浅谈Java中的equals和== 在初学Java时,可能会经常碰到下面的代码: String str1 = new String("hello"); String str2 = new String("hello"); Syste...
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转载: 浅谈Java中的深拷贝和浅拷贝 假如说你想复制一个简单变量。很简单: int apples = 5; int pears = apples; 不仅仅是int类型,其它七种原始数据类型(boolean,char,byte,short,...
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