小编The*_*tsu的帖子

[root@zexu websocket_start]# npm ls -g installed
npm WARN ls doesn't take positional args. Try the 'search' command
npm WARN websocket-server@1.4.04 package.json: bugs['web'] should probably be bugs['url']
/usr/lib
??? npm@1.1.2 
? ??? abbrev@1.0.3 
? ??? block-stream@0.0.5 
? ??? fast-list@1.0.2 
? ??? fstream@0.1.12 
? ??? graceful-fs@1.1.5 
? ??? inherits@1.0.0 
? ??? ini@1.0.2 
? ??? lru-cache@1.0.5 
? ??? minimatch@0.1.5 
? ??? mkdirp@0.3.0 
? ??? node-uuid@1.3.3 
? ??? nopt@1.0.10 
? ??? proto-list@1.0.0 
? ??? read@0.0.1 
? ??? request@2.9.151 
? ??? rimraf@2.0.1 
? ??? semver@1.0.13 …

我写了一个枚举类,我想要按类型获取属性并获取type by属性,但似乎不可能.

public enum AreaCode {
    area1(7927),
    area2(7928),
    area3(7929);

    private final int ac;

    AreaCode(int ac) {
        this.ac = ac;
    }

    int areaCode(){
        return ac;
    }

    AreaCode area(int n) {
        switch (n) {
            case 7927: return AreaCode.area1;
            case 7928: return AreaCode.area2;
            case 7929: return AreaCode.area3;
        }
    }
}

上面的代码不会编译.如何area(int n)上班？