added native-image plugin

jmath/build.gradle

@@ -11,8 +11,4 @@ dependencies {
 java {
     withJavadocJar()
     withSourcesJar()
-
-    toolchain {
-        languageVersion = JavaLanguageVersion.of(17)
-    }
 }

jmath/src/main/java/net/woggioni/jmath/BigIntegerExt.java

@@ -4,7 +4,6 @@ import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
 
 import java.math.BigInteger;
-import java.util.Objects;
 
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class BigIntegerExt {
@@ -29,21 +28,6 @@ public class BigIntegerExt {
         return a;
     }
 
-//    static BigInteger gcd(BigInteger n1, BigInteger n2) {
-//        BigInteger remainder;
-//        BigInteger result;
-//        while (true) {
-//            remainder = n1.mod(n2);
-//            result = n2;
-//            if (BigInteger.ZERO.equals(remainder)) break;
-//            else {
-//                n1 = n2;
-//                n2 = remainder;
-//            }
-//        }
-//        return result;
-//    }
-
     public static BigInteger mcm(BigInteger n1, BigInteger n2) {
         return n1.multiply(n2).divide(gcd(n1, n2));
     }

jmath/src/test/java/net/woggioni/jmath/MatrixTest.java

@@ -4,7 +4,6 @@ import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
-import java.util.Optional;
 import java.util.Random;
 import java.util.function.IntFunction;
 import java.util.stream.IntStream;

jmath/src/test/java/net/woggioni/jmath/RationalTest.java

@@ -9,9 +9,10 @@ import org.junit.jupiter.params.provider.ArgumentsProvider;
 import org.junit.jupiter.params.provider.ArgumentsSource;
 
 import java.math.BigInteger;
-import static java.math.BigInteger.valueOf;
 import java.util.stream.Stream;
 
+import static java.math.BigInteger.valueOf;
+
 public class RationalTest {
 
     private enum Operation {