List all of a JDKs supported elliptic curve names

all_jdk_ec_curve_names.groovy

for (Provider provider : Security.getProviders()) {
    for (def service : provider.getServices()) {
        if (service.getType() == 'AlgorithmParameters' && service.getAlgorithm() == 'EC') {
            String result = service.getAttribute('SupportedCurves')
            String[] split = Strings.delimitedListToStringArray(result, '|')
            println "supported curves: "
            for(String s : split) {
                String[] cleaned = Strings.delimitedListToStringArray(s, ',' ,'[]')
                Set<String> names = io.jsonwebtoken.lang.Collections.setOf(cleaned)
                println names.join(', ')
            }
        }
    }
}

Output from JDK 1.8.0_211 on MacOS:

supported curves: 
secp112r1, 1.3.132.0.6
secp112r2, 1.3.132.0.7
secp128r1, 1.3.132.0.28
secp128r2, 1.3.132.0.29
secp160k1, 1.3.132.0.9
secp160r1, 1.3.132.0.8
secp160r2, 1.3.132.0.30
secp192k1, 1.3.132.0.31
secp192r1, NIST P-192, X9.62 prime192v1, 1.2.840.10045.3.1.1
secp224k1, 1.3.132.0.32
secp224r1, NIST P-224, 1.3.132.0.33
secp256k1, 1.3.132.0.10
secp256r1, NIST P-256, X9.62 prime256v1, 1.2.840.10045.3.1.7
secp384r1, NIST P-384, 1.3.132.0.34
secp521r1, NIST P-521, 1.3.132.0.35
X9.62 prime192v2, 1.2.840.10045.3.1.2
X9.62 prime192v3, 1.2.840.10045.3.1.3
X9.62 prime239v1, 1.2.840.10045.3.1.4
X9.62 prime239v2, 1.2.840.10045.3.1.5
X9.62 prime239v3, 1.2.840.10045.3.1.6
sect113r1, 1.3.132.0.4
sect113r2, 1.3.132.0.5
sect131r1, 1.3.132.0.22
sect131r2, 1.3.132.0.23
sect163k1, NIST K-163, 1.3.132.0.1
sect163r1, 1.3.132.0.2
sect163r2, NIST B-163, 1.3.132.0.15
sect193r1, 1.3.132.0.24
sect193r2, 1.3.132.0.25
sect233k1, NIST K-233, 1.3.132.0.26
sect233r1, NIST B-233, 1.3.132.0.27
sect239k1, 1.3.132.0.3
sect283k1, NIST K-283, 1.3.132.0.16
sect283r1, NIST B-283, 1.3.132.0.17
sect409k1, NIST K-409, 1.3.132.0.36
sect409r1, NIST B-409, 1.3.132.0.37
sect571k1, NIST K-571, 1.3.132.0.38
sect571r1, NIST B-571, 1.3.132.0.39
X9.62 c2tnb191v1, 1.2.840.10045.3.0.5
X9.62 c2tnb191v2, 1.2.840.10045.3.0.6
X9.62 c2tnb191v3, 1.2.840.10045.3.0.7
X9.62 c2tnb239v1, 1.2.840.10045.3.0.11
X9.62 c2tnb239v2, 1.2.840.10045.3.0.12
X9.62 c2tnb239v3, 1.2.840.10045.3.0.13
X9.62 c2tnb359v1, 1.2.840.10045.3.0.18
X9.62 c2tnb431r1, 1.2.840.10045.3.0.20
brainpoolP160r1, 1.3.36.3.3.2.8.1.1.1
brainpoolP192r1, 1.3.36.3.3.2.8.1.1.3
brainpoolP224r1, 1.3.36.3.3.2.8.1.1.5
brainpoolP256r1, 1.3.36.3.3.2.8.1.1.7
brainpoolP320r1, 1.3.36.3.3.2.8.1.1.9
brainpoolP384r1, 1.3.36.3.3.2.8.1.1.11
brainpoolP512r1, 1.3.36.3.3.2.8.1.1.13