最终数组的模式而不是内部类中boolean标志的非final变量 [英] The pattern of final array instead of non-final variable for boolean flag in inner class

问题描述

当我需要在内部类中设置布尔标志时，我的Java代码经常出现这种情况。不可能使用原始布尔类型，因为内部类只能使用外部的最终变量，所以我使用这样的模式：

I often have a situation in my Java code when I need to set a boolean flag inside an inner class. It is not possible to use primitive boolean type for that, because inner class could only work with final variables from outside, so I use pattern like this:

// class from gnu.trove is not of big importance, just to have an example
private final TIntIntHashMap team = new TIntIntHashMap();
// ....... code ............
final boolean[] flag = new boolean[]{false};
team.forEachValue(new TIntProcedure() {
    @Override
    public boolean execute(int score) {
        if(score >= VICTORY_SCORE) {
            flag[0] = true;
        } 
        return true; // to continue iteration over hash map values
    }
});
//  ....... code ..............

最终数组的模式而不是非最终变量的效果很好，除非它看起来不够漂亮。有人知道Java中更好的模式吗？

The pattern of final array instead of non-final variable works well, except it is not look beautiful enough to me. Does someone know better pattern in Java ?

推荐答案

在某些情况下，这是最好的模式。

There are situations where this is the best pattern.

当我找到匹配项时，我建议的唯一改进是 return false 。

The only improvement I can suggest is return false when you have found a match.

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