Android studio command tools

Hi,

If i run avdmanager, so i get java error:

ERROR: JAVA_HOME is set to an invalid directory: /usr/lib/jvm/java-16-openjdk:/usr/lib/jvm/java-16-openjdk

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.
echo $JAVA_HOME
:/usr/lib/jvm/java-16-openjdk

Why avdmanger show this error, if i set JAVA_HOME to my java installation?

I removed colon, but now i have different problem.
I set JAVA_HOME to /usr/lib/jvm/java-16-openjdk

echo $JAVA_HOME
/usr/lib/jvm/java-16-openjdk

and if i run avd manager

avdmanager list target

I get this java error:

Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
	at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
	at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
	at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
	at com.android.sdklib.tool.AvdManagerCli.run(AvdManagerCli.java:213)
	at com.android.sdklib.tool.AvdManagerCli.main(AvdManagerCli.java:200)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
	... 5 more