java 位运算 取反（代码库）

标签：getIndex index java 运算 int 取反 attEnum newAuth tmp

System.out.println(5 & (~1));   比如，通过二进制位运算实现权限设置 newAuth.getAuthority() 为表示权限的数字，attEnum.getIndex() 指的是某一个权限的位数，代码如下  if (flag) {    Long tmp = newAuth.getAuthority() | attEnum.getIndex();

    newAuth.setAuthority(tmp);
} else {
    Long tmp = newAuth.getAuthority() & (~attEnum.getIndex());
    newAuth.setAuthority(tmp);
}



public enum AuthorityAttributeEnum {

    NAME(1), MOBILE(2), EMAIL(4);

    private int index;

    // 构造方法
    AuthorityAttributeEnum(int index) {
        this.index = index;
    }

    public int getIndex() {
        return index;
    }

    public void setIndex(int index) {
        this.index = index;
    }
}

 

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标签：getIndex,index,java,运算,int,取反,attEnum,newAuth,tmp
From： https://www.cnblogs.com/acm-bingzi/p/java_reverse.html