Problems intsalling Eclipse 2019-12 - eclipse

Question

I wanted to Install Eclipse 2019-12 however do I get an error once I want to open the installer.
It says:
Internal error:
java.lang.ExceptionInInitializerError
When I click on details it says:
java.lang.ExceptionInInitializerError
at org.eclipse.oomph.setup.internal.installer.InstallerApplication.run(InstallerApplication.java:119)
at org.eclipse.oomph.setup.internal.installer.InstallerApplication.start(InstallerApplication.java:397)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
Caused by: org.eclipse.oomph.util.ReflectUtil$ReflectionException: java.lang.ExceptionInInitializerError
at org.eclipse.oomph.util.ReflectUtil.invokeMethod(ReflectUtil.java:132)
at org.eclipse.oomph.util.ReflectUtil.invokeMethod(ReflectUtil.java:144)
at org.eclipse.oomph.setup.internal.installer.URISchemeUtil.<clinit>(URISchemeUtil.java:44)
... 15 more
Caused by: java.lang.ExceptionInInitializerError
at org.eclipse.urischeme.internal.registration.RegistryWriter.<init>(RegistryWriter.java:36)
at org.eclipse.urischeme.internal.registration.RegistrationWindows.<init>(RegistrationWindows.java:39)
at org.eclipse.urischeme.IOperatingSystemRegistration.getInstance(IOperatingSystemRegistration.java:41)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.eclipse.oomph.util.ReflectUtil.invokeMethod(ReflectUtil.java:117)
... 17 more
Caused by: java.lang.IllegalStateException: Unable to make private static byte[] java.util.prefs.WindowsPreferences.stringToByteArray(java.lang.String) accessible: module java.prefs does not "opens java.util.prefs" to unnamed module #726a17c4
at org.eclipse.urischeme.internal.registration.WinRegistry.<clinit>(WinRegistry.java:68)
... 25 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make private static byte[] java.util.prefs.WindowsPreferences.stringToByteArray(java.lang.String) accessible: module java.prefs does not "opens java.util.prefs" to unnamed module #726a17c4
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
at java.base/java.lang.reflect.AccessibleObject.setAccessible(AccessibleObject.java:130)
at org.eclipse.urischeme.internal.registration.WinRegistry.<clinit>(WinRegistry.java:66)
... 25 more
When I click on update it says:
This is an emergency update. Continue?
To lower the risks of problems duringthis update it will be implied thta you accept new licenses or unsigned content.
I have installed Java JDK 15.0.2 just before.
How can I make this Eclipse Installation work?
Thank you in advanced.