IDEA
idea的激活码都是带有期限的
如果过期的话，可以点击右上角的buy license购买
如果是学生的话，可以凭学生证可免费申请
或者从网上寻找免费的注册码Y9MXSIF79G-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-rI4et6OSKLA4gvOzxtyp48SCWtjwsOSQBJittaw6BOVJOwVBz0p31wBWDFSdIogdRPKquk2BAou7N694entEn4/Db3Ol5uotDtUd2MHuo+BBu9QcwIoX3RTrnYLwJfTlEJfRH/3TF3WtkPGQZQQcw/23hsZzdC/WJY6tmvyTijIBScUsvIOxZ+8REbWbkTQx1KliliFyrMua7hit8LThzfffZloHciaHwUP9BjxEjU0qQi+yFacSXjxEZERJT25hZrMN+bqBxcn59/4UJBrITt8YpLIlydt0+6vMSWAMawMzKpeDEDInKy0XomauTIUfxS4sbw/dSyVdSrh+IuOc7g==-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
然后将复制到的注册码，粘贴到Activation code里面，之后点击Activate即可
之后如果想要查看激活状态，可以在IDEA中，点击help
点击help菜单中的register按钮
然后就可以看到激活码的有效期