src/java.base/share/classes/java/security/Signature.java

*** 263,273 ****
      }
  
      private final static Map<String,Boolean> signatureInfo;
  
      static {
!         signatureInfo = new ConcurrentHashMap<String,Boolean>();
          Boolean TRUE = Boolean.TRUE;
          // pre-initialize with values for our SignatureSpi implementations
          signatureInfo.put("sun.security.provider.DSA$RawDSA", TRUE);
          signatureInfo.put("sun.security.provider.DSA$SHA1withDSA", TRUE);
          signatureInfo.put("sun.security.rsa.RSASignature$MD2withRSA", TRUE);
--- 263,273 ----
      }
  
      private final static Map<String,Boolean> signatureInfo;
  
      static {
!         signatureInfo = new ConcurrentHashMap<>();
          Boolean TRUE = Boolean.TRUE;
          // pre-initialize with values for our SignatureSpi implementations
          signatureInfo.put("sun.security.provider.DSA$RawDSA", TRUE);
          signatureInfo.put("sun.security.provider.DSA$SHA1withDSA", TRUE);
          signatureInfo.put("sun.security.rsa.RSASignature$MD2withRSA", TRUE);