Build: Add missing @Override annotations (dep-ann lint)

core/java/src/net/i2p/crypto/DSAEngine.java

@@ -478,6 +478,7 @@ public final class DSAEngine {
      *  @return hash SHA-1 hash, NOT a SHA-256 hash
      *  @deprecated unused
      */
+    @Deprecated
     public SHA1Hash calculateHash(InputStream in) {
         MessageDigest digest = SHA1.getInstance();
         byte buf[] = new byte[64];

core/java/src/net/i2p/crypto/SigUtil.java

@@ -460,6 +460,7 @@ public final class SigUtil {
     /**
      *  @deprecated unused
      */
+    @Deprecated
     public static RSAPublicKey toJavaRSAKey(SigningPublicKey pk)
                               throws GeneralSecurityException {
         SigType type = pk.getType();

core/java/src/net/i2p/crypto/eddsa/EdDSAEngine.java

@@ -496,6 +496,7 @@ public class EdDSAEngine extends Signature {
      * @deprecated replaced with <a href="#engineSetParameter(java.security.spec.AlgorithmParameterSpec)">this</a>
      */
     @Override
+    @Deprecated
     protected void engineSetParameter(String param, Object value) {
         throw new UnsupportedOperationException("engineSetParameter unsupported");
     }
@@ -504,6 +505,7 @@ public class EdDSAEngine extends Signature {
      * @deprecated
      */
     @Override
+    @Deprecated
     protected Object engineGetParameter(String param) {
         throw new UnsupportedOperationException("engineSetParameter unsupported");
     }

core/java/src/net/i2p/crypto/elgamal/ElGamalSigEngine.java

@@ -150,6 +150,7 @@ public final class ElGamalSigEngine extends Signature {
      * @deprecated replaced with <a href="#engineSetParameter(java.security.spec.AlgorithmParameterSpec)">this</a>
      */
     @Override
+    @Deprecated
     protected void engineSetParameter(String param, Object value) {
         throw new UnsupportedOperationException("engineSetParameter unsupported");
     }
@@ -158,6 +159,7 @@ public final class ElGamalSigEngine extends Signature {
      * @deprecated
      */
     @Override
+    @Deprecated
     protected Object engineGetParameter(String param) {
         throw new UnsupportedOperationException("engineSetParameter unsupported");
     }

core/java/src/net/i2p/data/DataHelper.java

@@ -629,6 +629,7 @@ public class DataHelper {
      *  @return (new BigInteger(1, buf)).toString()
      *  @deprecated unused
      */
+    @Deprecated
     public static String toDecimalString(byte buf[], int len) {
         if (buf == null)
             return "0";
@@ -652,6 +653,7 @@ public class DataHelper {
      *  @return minimum-length representation (with possible leading 0 byte)
      *  @deprecated unused
      */
+    @Deprecated
     public final static byte[] fromHexString(String val) {
         BigInteger bv = new BigInteger(val, 16);
         return bv.toByteArray();
@@ -2011,6 +2013,7 @@ public class DataHelper {
      *  @throws RuntimeException
      *  @deprecated unused
      */
+    @Deprecated
     public static byte[] getUTF8(StringBuffer orig) {
         if (orig == null) return null;
         return getUTF8(orig.toString());

core/java/src/net/i2p/data/Lease.java

@@ -69,6 +69,7 @@ public class Lease extends DataStructureImpl {
     /**
      * @deprecated use setEndDate(long)
      */
+    @Deprecated
     public void setEndDate(Date date) {
         _end = date.getTime();
     }