diff --git a/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/Complex.java b/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/Complex.java
index 4e9022ee3..cc72456e4 100644
--- a/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/Complex.java
+++ b/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/Complex.java
@@ -1304,6 +1304,6 @@ private static boolean equals(double x, double y) {
      * @return the hash code
      */
     private static int hash(double value) {
-        return new Double(value).hashCode();
+        return Double.valueOf(value).hashCode();
     }
 }
diff --git a/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/ComplexUtils.java b/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/ComplexUtils.java
index 1275b2779..6b3134638 100644
--- a/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/ComplexUtils.java
+++ b/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/ComplexUtils.java
@@ -293,7 +293,7 @@ public static float[] extractInterleavedFloatFromComplexArray(Complex[] complex,
      */
     public static Complex[] real2Complex(double[] real) {
         int index = 0;
-        final Complex c[] = new Complex[real.length];
+        final Complex[] c = new Complex[real.length];
         for (double d : real) {
             c[index] = new Complex(d);
             index++;
@@ -311,7 +311,7 @@ public static Complex[] real2Complex(double[] real) {
      */
     public static Complex[] real2Complex(float[] real) {
         int index = 0;
-        final Complex c[] = new Complex[real.length];
+        final Complex[] c = new Complex[real.length];
         for (float d : real) {
             c[index] = new Complex(d);
             index++;
@@ -366,7 +366,7 @@ public static Complex[][][] real2Complex(double[][][] d) {
      */
     public static double[] complex2Real(Complex[] c) {
         int index = 0;
-        final double d[] = new double[c.length];
+        final double[] d = new double[c.length];
         for (Complex cc : c) {
             d[index] = cc.getReal();
             index++;
@@ -385,7 +385,7 @@ public static double[] complex2Real(Complex[] c) {
      */
     public static float[] complex2RealFloat(Complex[] c) {
         int index = 0;
-        final float f[] = new float[c.length];
+        final float[] f = new float[c.length];
         for (Complex cc : c) {
             f[index] = (float) cc.getReal();
             index++;
@@ -473,7 +473,7 @@ public static float[][][] complex2RealFloat(Complex[][][] c) {
      */
     public static Complex[] imaginary2Complex(double[] imaginary) {
         int index = 0;
-        final Complex c[] = new Complex[imaginary.length];
+        final Complex[] c = new Complex[imaginary.length];
         for (double d : imaginary) {
             c[index] = new Complex(0, d);
             index++;
@@ -491,7 +491,7 @@ public static Complex[] imaginary2Complex(double[] imaginary) {
      */
     public static Complex[] imaginary2Complex(float[] imaginary) {
         int index = 0;
-        final Complex c[] = new Complex[imaginary.length];
+        final Complex[] c = new Complex[imaginary.length];
         for (float d : imaginary) {
             c[index] = new Complex(0, d);
             index++;
@@ -551,7 +551,7 @@ public static Complex[][][] imaginary2Complex(double[][][] d) {
      */
     public static double[] complex2Imaginary(Complex[] c) {
         int index = 0;
-        final double d[] = new double[c.length];
+        final double[] d = new double[c.length];
         for (Complex cc : c) {
             d[index] = cc.getImaginary();
             index++;
@@ -570,7 +570,7 @@ public static double[] complex2Imaginary(Complex[] c) {
      */
     public static float[] complex2ImaginaryFloat(Complex[] c) {
         int index = 0;
-        final float f[] = new float[c.length];
+        final float[] f = new float[c.length];
         for (Complex cc : c) {
             f[index] = (float) cc.getImaginary();
             index++;
@@ -660,7 +660,7 @@ public static float[][][] complex2ImaginaryFloat(Complex[][][] c) {
      */
     public static Complex[] interleaved2Complex(double[] interleaved) {
         final int length = interleaved.length / 2;
-        final Complex c[] = new Complex[length];
+        final Complex[] c = new Complex[length];
         for (int n = 0; n < length; n++) {
             c[n] = new Complex(interleaved[n * 2], interleaved[n * 2 + 1]);
         }
@@ -678,7 +678,7 @@ public static Complex[] interleaved2Complex(double[] interleaved) {
      */
     public static Complex[] interleaved2Complex(float[] interleaved) {
         final int length = interleaved.length / 2;
-        final Complex c[] = new Complex[length];
+        final Complex[] c = new Complex[length];
         for (int n = 0; n < length; n++) {
             c[n] = new Complex(interleaved[n * 2], interleaved[n * 2 + 1]);
         }
@@ -697,7 +697,7 @@ public static Complex[] interleaved2Complex(float[] interleaved) {
      */
     public static double[] complex2Interleaved(Complex[] c) {
         int index = 0;
-        final double d[] = new double[c.length * 2];
+        final double[] d = new double[c.length * 2];
         for (Complex cc : c) {
             int real = index * 2;
             int imag = index * 2 + 1;
@@ -720,7 +720,7 @@ public static double[] complex2Interleaved(Complex[] c) {
      */
     public static float[] complex2InterleavedFloat(Complex[] c) {
         int index = 0;
-        final float f[] = new float[c.length * 2];
+        final float[] f = new float[c.length * 2];
         for (Complex cc : c) {
             int real = index * 2;
             int imag = index * 2 + 1;