一、 前言
作為一枚程序員，你肯定對IntelliJ IDEA這個工具一點也不陌生！或許你沒有用過，但你也一定聽說過。作為在業界被公認為最好的java開發工具，IDEA每次大版本更新都備受矚目。划重點，IntelliJ IDEA 2019.3現已發布 近期，我也是從2019.2版本升級到了2019.3。說實話，本次升級體驗還是非常好的。最明顯的一點是啟動速度大大提升了。當然，也有其他方面的升級。不得不說，IDEA真是變得越來越好用了。如果你是一名Java學習或開發者，很建議你將IDE轉換或升級到IntelliJ IDEA 2019.3。使用新版本IDEA后，你肯定會有不一樣的體驗，編碼速度大大提升。
二、下載安裝
官網下載。IDEA官網：https://www.jetbrains.com/idea/
三、注冊激活
以下方法在最新2019.3上測試通過。只要你安裝以下步驟操作，絕對能成功激活。操作步驟如下：
1.先下載壓縮包解壓后得到jetbrains-agent.jar，把它放到你認為合適的文件夾內。例如：idea安裝目錄的bin目錄：D:IntelliJ IDEA 2019.3.3bin
下載
2.啟動你的IDE，如果上來就需要注冊，選擇：試用(Evaluate for free)進入IDE
3.點擊IDEA菜單："Help" -> "Edit Custom VM Options ..."
如果提示是否要創建文件，請點"Yes"。
4.在打開的vmoptions編輯窗口末行添加：-javaagent:/absolute/path/to/jetbrains-agent.jar
一定要自己確認好路徑(不要使用中文路徑)，填錯會導致IDE打不開！！！最好使用絕對路徑。
一個vmoptions內只能有一個-javaagent參數。
-javaagent:D:/liuf/java/IntelliJ IDEA 2019.3.3/bin/jetbrains-agent.jar
5.重啟你的IDE。
6.支持兩種注冊方式：License server 和 Activation code:
選擇License server方式，地址填入：http://jetbrains-license-server (應該會自動填上)(沒有使用)
或者點擊按鈕："Discover Server"來自動填充地址。
選擇Activation code方式離線激活，請使用：ACTIVATION_CODE.txt 內的注冊碼激活(推薦)
注冊碼
3AGXEJXFK9-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-WGTHs6XpDhr+uumvbwQPOdlxWnQwgnGaL4eRnlpGKApEEkJyYvNEuPWBSrQkPmVpim/8Sab6HV04Dw3IzkJT0yTc29sPEXBf69+7y6Jv718FaJu4MWfsAk/ZGtNIUOczUQ0iGKKnSSsfQ/3UoMv0q/yJcfvj+me5Zd/gfaisCCMUaGjB/lWIPpEPzblDtVJbRexB1MALrLCEoDv3ujcPAZ7xWb54DiZwjYhQvQ+CvpNNF2jeTku7lbm5v+BoDsdeRq7YBt9ANLUKPr2DahcaZ4gctpHZXhG96IyKx232jYq9jQrFDbQMtVr3E+GsCekMEWSD//dLT+HuZdc1sAIYrw==-MIIElTCCAn2gAwIBAgIBCTANBgkqhkiG9w0BAQsFADAYMRYwFAYDVQQDDA1KZXRQcm9maWxlIENBMB4XDTE4MTEwMTEyMjk0NloXDTIwMTEwMjEyMjk0NlowaDELMAkGA1UEBhMCQ1oxDjAMBgNVBAgMBU51c2xlMQ8wDQYDVQQHDAZQcmFndWUxGTAXBgNVBAoMEEpldEJyYWlucyBzLnIuby4xHTAbBgNVBAMMFHByb2QzeS1mcm9tLTIwMTgxMTAxMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5ndaik1GD0nyTdqkZgURQZGW+RGxCdBITPXIwpjhhaD0SXGa4XSZBEBoiPdY6XV6pOfUJeyfi9dXsY4MmT0D+sKoST3rSw96xaf9FXPvOjn4prMTdj3Ji3CyQrGWeQU2nzYqFrp1QYNLAbaViHRKuJrYHI6GCvqCbJe0LQ8qqUiVMA9wG/PQwScpNmTF9Kp2Iej+Z5OUxF33zzm+vg/nYV31HLF7fJUAplI/1nM+ZG8K+AXWgYKChtknl3sW9PCQa3a3imPL9GVToUNxc0wcuTil8mqveWcSQCHYxsIaUajWLpFzoO2AhK4mfYBSStAqEjoXRTuj17mo8Q6M2SHOcwIDAQABo4GZMIGWMAkGA1UdEwQCMAAwHQYDVR0OBBYEFGEpG9oZGcfLMGNBkY7SgHiMGgTcMEgGA1UdIwRBMD+AFKOetkhnQhI2Qb1t4Lm0oFKLl/GzoRykGjAYMRYwFAYDVQQDDA1KZXRQcm9maWxlIENBggkA0myxg7KDeeEwEwYDVR0lBAwwCgYIKwYBBQUHAwEwCwYDVR0PBAQDAgWgMA0GCSqGSIb3DQEBCwUAA4ICAQBonMu8oa3vmNAa4RQP8gPGlX3SQaA3WCRUAj6Zrlk8AesKV1YSkh5D2l+yUk6njysgzfr1bIR5xF8eup5xXc4/G7NtVYRSMvrd6rfQcHOyK5UFJLm+8utmyMIDrZOzLQuTsT8NxFpbCVCfV5wNRu4rChrCuArYVGaKbmp9ymkw1PU6+HoO5i2wU3ikTmRv8IRjrlSStyNzXpnPTwt7bja19ousk56r40SmlmC04GdDHErr0ei2UbjUua5kw71Qn9g02tL9fERI2sSRjQrvPbn9INwRWl5+k05mlKekbtbu2ev2woJFZK4WEXAd/GaAdeZZdumv8T2idDFL7cAirJwcrbfpawPeXr52oKTPnXfi0l5+g9Gnt/wfiXCrPElX6ycTR6iL3GC2VR4jTz6YatT4Ntz59/THOT7NJQhr6AyLkhhJCdkzE2cob/KouVp4ivV7Q3Fc6HX7eepHAAF/DpxwgOrg9smX6coXLgfp0b1RU2u/tUNID04rpNxTMueTtrT8WSskqvaJd3RH8r7cnRj6Y2hltkja82HlpDURDxDTRvv+krbwMr26SB/40BjpMUrDRCeKuiBahC0DCoU/4+ze1l94wVUhdkCfL0GpJrMSCDEK+XEurU18Hb7WT+ThXbkdl6VpFdHsRvqAnhR2g4b+Qzgidmuky5NUZVfEaZqV/g==
基本上照這個步驟操作就可以了，如果以前用的也是這種破解，但是現在不管用的話，可能是你的破解jar需要更新，此鏈接的jar是最新的，支持2019.3版本的破解