近期要研读和调试spark2，用eclispe据说各种问题，so还是切换到 intellij
1：下载 （官网自行下载最新版本）
2： 注册码
intellij idea 2016 activation code
43B4A73YYJ-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-keaxIkRgXPKE4BR/ZTs7s7UkP92LBxRe57HvWamu1EHVXTcV1B4f/KNQIrpOpN6dgpjig5eMVMPmo7yMPl+bmwQ8pTZaCGFuLqCHD1ngo6ywHKIQy0nR249sAUVaCl2wGJwaO4JeOh1opUx8chzSBVRZBMz0/MGyygi7duYAff9JQqfH3p/BhDTNM8eKl6z5tnneZ8ZG5bG1XvqFTqWk4FhGsEWdK7B+He44hPjBxKQl2gmZAodb6g9YxfTHhVRKQY5hQ7KPXNvh3ikerHkoaL5apgsVBZJOTDE2KdYTnGLmqxghFx6L0ofqKI6hMr48ergMyflDk6wLNGWJvYHLWw==-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
3： 选择喜欢的风格
4：快捷键
command + O Go to class
command + N Generate
command + delete Delete line