Java 对象重写equals

1 重写equals

重写equals 之前 需要重写 hashCode()

    @Override
    public boolean equals(Object obj) {
        if (null == obj) {
            return false;
        }

        PssPlanInfo o = (PssPlanInfo)obj;
        if (date.equals(o)) {
            return true;
        }

        return false;
    }

    @Override
    public int hashCode() {
        return this.date.hashCode();
    }

2. 深克隆

    @Override
    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }