Remove redundant initializer. (#800)

src/main/java/org/apache/commons/lang3/ArrayUtils.java

@@ -764,7 +764,7 @@ public class ArrayUtils {
      */
     @Deprecated
     public static <T> T[] add(final T[] array, final int index, final T element) {
-        Class<T> clss = null;
+        Class<T> clss;
         if (array != null) {
             clss = getComponentType(array);
         } else if (element != null) {

src/main/java/org/apache/commons/lang3/CharSetUtils.java

@@ -212,7 +212,7 @@ public class CharSetUtils {
         final char[] chrs = str.toCharArray();
         final int sz = chrs.length;
         char lastChar = chrs[0];
-        char ch = ' ';
+        char ch;
         Character inChars = null;
         Character notInChars = null;
         buffer.append(lastChar);

src/main/java/org/apache/commons/lang3/StringUtils.java

@@ -2816,7 +2816,7 @@ public class StringUtils {
         // String's can't have a MAX_VALUEth index.
         int ret = Integer.MAX_VALUE;
 
-        int tmp = 0;
+        int tmp;
         for (final CharSequence search : searchStrs) {
             if (search == null) {
                 continue;
@@ -5079,7 +5079,7 @@ public class StringUtils {
             return INDEX_NOT_FOUND;
         }
         int ret = INDEX_NOT_FOUND;
-        int tmp = 0;
+        int tmp;
         for (final CharSequence search : searchStrs) {
             if (search == null) {
                 continue;
@@ -6766,7 +6766,7 @@ public class StringUtils {
         // index on index that the match was found
         int textIndex = -1;
         int replaceIndex = -1;
-        int tempIndex = -1;
+        int tempIndex;
 
         // index of replace array that will replace the search string found
         // NOTE: logic duplicated below START

src/main/java/org/apache/commons/lang3/math/Fraction.java

@@ -257,14 +257,14 @@ public final class Fraction extends Number implements Comparable<Fraction> {
         int denom0 = 1; // the pre-previous
         int numer1 = 1; // the previous
         int denom1 = 0; // the previous
-        int numer2 = 0; // the current, setup in calculation
-        int denom2 = 0; // the current, setup in calculation
+        int numer2; // the current, setup in calculation
+        int denom2; // the current, setup in calculation
         int a1 = (int) value;
-        int a2 = 0;
+        int a2;
         double x1 = 1;
-        double x2 = 0;
+        double x2;
         double y1 = value - a1;
-        double y2 = 0;
+        double y2;
         double delta1, delta2 = Double.MAX_VALUE;
         double fraction;
         int i = 1;

src/main/java/org/apache/commons/lang3/reflect/MethodUtils.java

@@ -209,7 +209,7 @@ public class MethodUtils {
         args = ArrayUtils.nullToEmpty(args);
 
         final String messagePrefix;
-        Method method = null;
+        Method method;
 
         if (forceAccess) {
             messagePrefix = "No such method: ";

src/main/java/org/apache/commons/lang3/reflect/TypeUtils.java

@@ -630,7 +630,7 @@ public class TypeUtils {
 
             // find the interface closest to the super class
             for (final Type midType : interfaceTypes) {
-                Class<?> midClass = null;
+                Class<?> midClass;
 
                 if (midType instanceof ParameterizedType) {
                     midClass = getRawType((ParameterizedType) midType);

src/main/java/org/apache/commons/lang3/text/ExtendedMessageFormat.java

@@ -445,7 +445,7 @@ public class ExtendedMessageFormat extends MessageFormat {
      * @param pos current position
      */
     private void seekNonWs(final String pattern, final ParsePosition pos) {
-        int len = 0;
+        int len;
         final char[] buffer = pattern.toCharArray();
         do {
             len = StrMatcher.splitMatcher().isMatch(buffer, pos.getIndex());

src/main/java/org/apache/commons/lang3/text/StrSubstitutor.java

@@ -778,7 +778,7 @@ public class StrSubstitutor {
                 // find suffix
                 final int startPos = pos;
                 pos += startMatchLen;
-                int endMatchLen = 0;
+                int endMatchLen;
                 int nestedVarCount = 0;
                 while (pos < bufEnd) {
                     if (substitutionInVariablesEnabled
@@ -813,7 +813,7 @@ public class StrSubstitutor {
 
                             if (valueDelimMatcher != null) {
                                 final char [] varNameExprChars = varNameExpr.toCharArray();
-                                int valueDelimiterMatchLen = 0;
+                                int valueDelimiterMatchLen;
                                 for (int i = 0; i < varNameExprChars.length; i++) {
                                     // if there's any nested variable when nested variable substitution disabled, then stop resolving name and default value.
                                     if (!substitutionInVariablesEnabled

src/main/java/org/apache/commons/lang3/time/DateUtils.java

@@ -1129,8 +1129,8 @@ public class DateUtils {
         if (focus == null) {
             throw nullDateIllegalArgumentException();
         }
-        Calendar start = null;
-        Calendar end = null;
+        Calendar start;
+        Calendar end;
         int startCutoff = Calendar.SUNDAY;
         int endCutoff = Calendar.SATURDAY;
         switch (rangeStyle) {