diff --git a/src/java/org/apache/commons/math/stat/descriptive/AbstractStorelessUnivariateStatistic.java b/src/java/org/apache/commons/math/stat/descriptive/AbstractStorelessUnivariateStatistic.java
index 7c8904f15..ea6611962 100644
--- a/src/java/org/apache/commons/math/stat/descriptive/AbstractStorelessUnivariateStatistic.java
+++ b/src/java/org/apache/commons/math/stat/descriptive/AbstractStorelessUnivariateStatistic.java
@@ -18,7 +18,6 @@ package org.apache.commons.math.stat.descriptive;
 
 import org.apache.commons.math.MathRuntimeException;
 import org.apache.commons.math.util.MathUtils;
-import java.io.Serializable;
 
 /**
  *
diff --git a/src/test/org/apache/commons/math/linear/DenseFieldMatrixTest.java b/src/test/org/apache/commons/math/linear/DenseFieldMatrixTest.java
index 24f044ed4..93ca20ec4 100644
--- a/src/test/org/apache/commons/math/linear/DenseFieldMatrixTest.java
+++ b/src/test/org/apache/commons/math/linear/DenseFieldMatrixTest.java
@@ -16,12 +16,6 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.util.Arrays;
 import java.util.Random;
 
diff --git a/src/test/org/apache/commons/math/linear/DenseRealMatrixTest.java b/src/test/org/apache/commons/math/linear/DenseRealMatrixTest.java
index 78e53cff4..20edd38d0 100644
--- a/src/test/org/apache/commons/math/linear/DenseRealMatrixTest.java
+++ b/src/test/org/apache/commons/math/linear/DenseRealMatrixTest.java
@@ -16,23 +16,17 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.util.Arrays;
 import java.util.Random;
 
-import org.apache.commons.math.TestUtils;
-import org.apache.commons.math.linear.decomposition.LUDecompositionImpl;
-import org.apache.commons.math.linear.decomposition.NonSquareMatrixException;
-
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
 
+import org.apache.commons.math.TestUtils;
+import org.apache.commons.math.linear.decomposition.LUDecompositionImpl;
+import org.apache.commons.math.linear.decomposition.NonSquareMatrixException;
+
 /**
  * Test cases for the {@link DenseRealMatrix} class.
  *
diff --git a/src/test/org/apache/commons/math/linear/FieldMatrixImplTest.java b/src/test/org/apache/commons/math/linear/FieldMatrixImplTest.java
index 6e42d7d73..9d7254f61 100644
--- a/src/test/org/apache/commons/math/linear/FieldMatrixImplTest.java
+++ b/src/test/org/apache/commons/math/linear/FieldMatrixImplTest.java
@@ -16,13 +16,6 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
diff --git a/src/test/org/apache/commons/math/linear/FieldVectorImplTest.java b/src/test/org/apache/commons/math/linear/FieldVectorImplTest.java
index b6d57ebb3..43197255a 100644
--- a/src/test/org/apache/commons/math/linear/FieldVectorImplTest.java
+++ b/src/test/org/apache/commons/math/linear/FieldVectorImplTest.java
@@ -16,12 +16,6 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.io.Serializable;
 import java.lang.reflect.Array;
 
diff --git a/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java b/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java
index df81c2ad1..7ea01a2ba 100644
--- a/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java
+++ b/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java
@@ -16,13 +16,6 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
diff --git a/src/test/org/apache/commons/math/linear/RealVectorImplTest.java b/src/test/org/apache/commons/math/linear/RealVectorImplTest.java
index 8db19a426..8b67f3732 100644
--- a/src/test/org/apache/commons/math/linear/RealVectorImplTest.java
+++ b/src/test/org/apache/commons/math/linear/RealVectorImplTest.java
@@ -16,20 +16,14 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.io.Serializable;
 
-import org.apache.commons.math.TestUtils;
-
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
 
+import org.apache.commons.math.TestUtils;
+
 /**
  * Test cases for the {@link RealVectorImpl} class.
  *
diff --git a/src/test/org/apache/commons/math/linear/SparseRealMatrixTest.java b/src/test/org/apache/commons/math/linear/SparseRealMatrixTest.java
index 01ea24752..ff537e7c6 100644
--- a/src/test/org/apache/commons/math/linear/SparseRealMatrixTest.java
+++ b/src/test/org/apache/commons/math/linear/SparseRealMatrixTest.java
@@ -16,13 +16,6 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
diff --git a/src/test/org/apache/commons/math/linear/SparseRealVectorTest.java b/src/test/org/apache/commons/math/linear/SparseRealVectorTest.java
index e0b1e352b..272c450fd 100644
--- a/src/test/org/apache/commons/math/linear/SparseRealVectorTest.java
+++ b/src/test/org/apache/commons/math/linear/SparseRealVectorTest.java
@@ -16,20 +16,14 @@
  */
 package org.apache.commons.math.linear;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.io.Serializable;
 
-import org.apache.commons.math.TestUtils;
-
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
 
+import org.apache.commons.math.TestUtils;
+
 /**
  * Test cases for the {@link OpenMapRealVector} class.
  *