I try to use RSAKeyGenParameterSpec to initialize KeyPairGenerator, but the following exception come up

java.security.InvalidAlgorithmParameterException: Parameter spec not RSA key pair gen.
at com.sun.rsajca.JSA_RSAKeyPairGenerator.getKeyPairGenParameters([DashoPro-V1.2-120198])
at com.sun.rsajca.JS_KeyPairGenerator.initialize([DashoPro-V1.2-120198])
at java.security.KeyPairGenerator$Delegate.initialize(Unknown Source)
at java.security.KeyPairGenerator.initialize(Unknown Source)
at TestRSAKeyGenParameterSpec.generateKeys(TestRSAKeyGenParameterSpec.java:81)
at TestRSAKeyGenParameterSpec.main(TestRSAKeyGenParameterSpec.java:36)
Exception in thread "main"

see attachment for testing program.