According to this guide: [https://github.com/arduino/Arduino/wiki/Building-Arduino]
I succeeded in compiling arduino ide source code, but when I try to launch it using "ant run", it immediately crashes. What can i do to help?

My OS is WIN7.
jdk installation path: D:\Program Files (x86)\Java\jdk1.8.0_202
JAVA_HOME = D:\Program Files (x86)\Java\jdk1.8.0_202
CLASSPATH = .%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar

arduino_debug.exe reports following info.

D:\Arduino\build\windows\work>arduino_debug.exe
java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native
at com.sun.jna.platform.win32.Shell32.(Shell32.java:32)
at com.sun.jna.platform.win32.Shell32Util.getFolderPath(Shell32Util.java
:44)
at com.sun.jna.platform.win32.Shell32Util.getFolderPath(Shell32Util.java
:61)
at cc.arduino.os.windows.Win32KnownFolders.getLocalAppDataFolder(Win32Kn
ownFolders.java:53)
at processing.app.windows.Platform.recoverSettingsFolderPath(Platform.ja
va:64)
at processing.app.windows.Platform.init(Platform.java:54)
at processing.app.Base.(Base.java:208)
at processing.app.Base.main(Base.java:151)