diff --git a/src/main/java/org/apache/commons/lang3/builder/EqualsBuilder.java b/src/main/java/org/apache/commons/lang3/builder/EqualsBuilder.java
index f86fae431..0911def2f 100644
--- a/src/main/java/org/apache/commons/lang3/builder/EqualsBuilder.java
+++ b/src/main/java/org/apache/commons/lang3/builder/EqualsBuilder.java
@@ -213,11 +213,11 @@ public class EqualsBuilder implements Builder<Boolean> {
      */
     private boolean isEquals = true;
 
-    private boolean testTransients = false;
-    private boolean testRecursive = false;
+    private boolean testTransients;
+    private boolean testRecursive;
     private List<Class<?>> bypassReflectionClasses;
-    private Class<?> reflectUpToClass = null;
-    private String[] excludeFields = null;
+    private Class<?> reflectUpToClass;
+    private String[] excludeFields;
 
     /**
      * <p>Constructor for EqualsBuilder.</p>
diff --git a/src/main/java/org/apache/commons/lang3/builder/HashCodeBuilder.java b/src/main/java/org/apache/commons/lang3/builder/HashCodeBuilder.java
index 75eb3e38b..319f70457 100644
--- a/src/main/java/org/apache/commons/lang3/builder/HashCodeBuilder.java
+++ b/src/main/java/org/apache/commons/lang3/builder/HashCodeBuilder.java
@@ -536,7 +536,7 @@ public class HashCodeBuilder implements Builder<Integer> {
     /**
      * Running total of the hashCode.
      */
-    private int iTotal = 0;
+    private int iTotal;
 
     /**
      * <p>
diff --git a/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java b/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java
index 63ad959d1..a763029e9 100644
--- a/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java
+++ b/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java
@@ -441,12 +441,12 @@ public class ReflectionToStringBuilder extends ToStringBuilder {
     /**
      * Whether or not to append static fields.
      */
-    private boolean appendStatics = false;
+    private boolean appendStatics;
 
     /**
      * Whether or not to append transient fields.
      */
-    private boolean appendTransients = false;
+    private boolean appendTransients;
 
     /**
      * Whether or not to append fields that are null.
@@ -463,7 +463,7 @@ public class ReflectionToStringBuilder extends ToStringBuilder {
     /**
      * The last super class to stop appending fields for.
      */
-    private Class<?> upToClass = null;
+    private Class<?> upToClass;
 
     /**
      * <p>
diff --git a/src/main/java/org/apache/commons/lang3/builder/ToStringStyle.java b/src/main/java/org/apache/commons/lang3/builder/ToStringStyle.java
index 962056ade..3497c3646 100644
--- a/src/main/java/org/apache/commons/lang3/builder/ToStringStyle.java
+++ b/src/main/java/org/apache/commons/lang3/builder/ToStringStyle.java
@@ -263,7 +263,7 @@ public abstract class ToStringStyle implements Serializable {
     /**
      * Whether to use short class names, the default is {@code false}.
      */
-    private boolean useShortClassName = false;
+    private boolean useShortClassName;
 
     /**
      * Whether to use the identity hash code, the default is {@code true}.
@@ -288,12 +288,12 @@ public abstract class ToStringStyle implements Serializable {
     /**
      * Whether the field separator should be added before any other fields.
      */
-    private boolean fieldSeparatorAtStart = false;
+    private boolean fieldSeparatorAtStart;
 
     /**
      * Whether the field separator should be added after any other fields.
      */
-    private boolean fieldSeparatorAtEnd = false;
+    private boolean fieldSeparatorAtEnd;
 
     /**
      * The field separator {@code ','}.
diff --git a/src/main/java/org/apache/commons/lang3/math/Fraction.java b/src/main/java/org/apache/commons/lang3/math/Fraction.java
index ba077dfe7..5979d8c09 100644
--- a/src/main/java/org/apache/commons/lang3/math/Fraction.java
+++ b/src/main/java/org/apache/commons/lang3/math/Fraction.java
@@ -104,15 +104,15 @@ public final class Fraction extends Number implements Comparable<Fraction> {
     /**
      * Cached output hashCode (class is immutable).
      */
-    private transient int hashCode = 0;
+    private transient int hashCode;
     /**
      * Cached output toString (class is immutable).
      */
-    private transient String toString = null;
+    private transient String toString;
     /**
      * Cached output toProperString (class is immutable).
      */
-    private transient String toProperString = null;
+    private transient String toProperString;
 
     /**
      * <p>Constructs a {@code Fraction} instance with the 2 parts
diff --git a/src/main/java/org/apache/commons/lang3/text/StrSubstitutor.java b/src/main/java/org/apache/commons/lang3/text/StrSubstitutor.java
index ed6c05abc..44d16a1f6 100644
--- a/src/main/java/org/apache/commons/lang3/text/StrSubstitutor.java
+++ b/src/main/java/org/apache/commons/lang3/text/StrSubstitutor.java
@@ -173,7 +173,7 @@ public class StrSubstitutor {
     /**
      * Whether escapes should be preserved.  Default is false;
      */
-    private boolean preserveEscapes = false;
+    private boolean preserveEscapes;
 
     //-----------------------------------------------------------------------
     /**
diff --git a/src/main/java/org/apache/commons/lang3/text/StrTokenizer.java b/src/main/java/org/apache/commons/lang3/text/StrTokenizer.java
index 0cc5d8976..01063c718 100644
--- a/src/main/java/org/apache/commons/lang3/text/StrTokenizer.java
+++ b/src/main/java/org/apache/commons/lang3/text/StrTokenizer.java
@@ -126,7 +126,7 @@ public class StrTokenizer implements ListIterator<String>, Cloneable {
     private StrMatcher trimmerMatcher = StrMatcher.noneMatcher();
 
     /** Whether to return empty tokens as null */
-    private boolean emptyAsNull = false;
+    private boolean emptyAsNull;
     /** Whether to ignore empty tokens */
     private boolean ignoreEmptyTokens = true;