Again, if the variable is In java we use final keyword with variables to specify its values are not to be changed. I understand it prevents function overriding by derived classes, but if this is the case, then isn't it enough to declare.
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How are they different ?
I'm always confused between static and final keywords in java.
The reason it gives is that interface variables are intended to be java constants. Use public final static string when you want to. The difference has to do with how memory is allocated. The quote above is better in context.
Final 的作用 final 是 java 中的一个关键字，简而言之，final 的作用意味着“这是无法改变的”。不过由于 final 关键字一共有三种用法，它可以用来修饰变量、方法或者类，而且在修饰不同的地方时，效果、. Both final and const prevent a variable from being reassigned (similar to how final works in java or how const works in javascript). But i see that you can change the value in the constructor / methods of the class. The quote was just elaborating on why such a constant would be static and final.
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