If {@code null} is passed in, {@code null} will be returned.
* - *NOTE: This returns null and will throw a NullPointerException if unboxed to a boolean.
+ *NOTE: This returns {@code null} and will throw a {@code NullPointerException} + * if unboxed to a boolean.
* *
* BooleanUtils.negate(Boolean.TRUE) = Boolean.FALSE;
@@ -78,7 +79,7 @@ public class BooleanUtils {
* BooleanUtils.isTrue(null) = false
*
*
- * @param bool the boolean to check, null returns {@code false}
+ * @param bool the boolean to check, {@code null} returns {@code false}
* @return {@code true} only if the input is non-null and true
* @since 2.1
*/
@@ -115,7 +116,7 @@ public class BooleanUtils {
*
*
* @param bool the boolean to check, null returns {@code false}
- * @return {@code true} only if the input is non-null and false
+ * @return {@code true} only if the input is non-{@code null} and {@code false}
* @since 2.1
*/
public static boolean isFalse(final Boolean bool) {
@@ -133,7 +134,7 @@ public class BooleanUtils {
*
*
* @param bool the boolean to check, null returns {@code true}
- * @return {@code true} if the input is null or true
+ * @return {@code true} if the input is {@code null} or {@code true}
* @since 2.3
*/
public static boolean isNotFalse(final Boolean bool) {
@@ -162,13 +163,16 @@ public class BooleanUtils {
* Converts a Boolean to a boolean handling {@code null}.
* *
- * BooleanUtils.toBooleanDefaultIfNull(Boolean.TRUE, false) = true
- * BooleanUtils.toBooleanDefaultIfNull(Boolean.FALSE, true) = false
- * BooleanUtils.toBooleanDefaultIfNull(null, true) = true
+ * BooleanUtils.toBooleanDefaultIfNull(Boolean.TRUE, false) = true
+ * BooleanUtils.toBooleanDefaultIfNull(Boolean.TRUE, true) = true
+ * BooleanUtils.toBooleanDefaultIfNull(Boolean.FALSE, true) = false
+ * BooleanUtils.toBooleanDefaultIfNull(Boolean.FALSE, false) = false
+ * BooleanUtils.toBooleanDefaultIfNull(null, true) = true
+ * BooleanUtils.toBooleanDefaultIfNull(null, false) = false
*
*
- * @param bool the boolean to convert
- * @param valueIfNull the boolean value to return if {@code null}
+ * @param bool the boolean object to convert to primitive
+ * @param valueIfNull the boolean value to return if the parameter {@code bool} is {@code null}
* @return {@code true} or {@code false}
*/
public static boolean toBooleanDefaultIfNull(final Boolean bool, final boolean valueIfNull) {
@@ -182,7 +186,7 @@ public class BooleanUtils {
//-----------------------------------------------------------------------
/**
* Converts an int to a boolean using the convention that {@code zero} - * is {@code false}.
+ * is {@code false}, everything else is {@code true}. * *
* BooleanUtils.toBoolean(0) = false
@@ -200,7 +204,7 @@ public class BooleanUtils {
/**
* Converts an int to a Boolean using the convention that {@code zero}
- * is {@code false}.
+ * is {@code false}, everything else is {@code true}.
*
*
* BooleanUtils.toBoolean(0) = Boolean.FALSE
@@ -218,11 +222,12 @@ public class BooleanUtils {
/**
* Converts an Integer to a Boolean using the convention that {@code zero}
- * is {@code false}.
+ * is {@code false}, every other numeric value is {@code true}.
*
* {@code null} will be converted to {@code null}.
*
- * NOTE: This returns null and will throw a NullPointerException if unboxed to a boolean.
+ * NOTE: This method may return {@code null} and may throw a {@code NullPointerException}
+ * if unboxed to a {@code boolean}.
*
*
* BooleanUtils.toBoolean(Integer.valueOf(0)) = Boolean.FALSE
@@ -244,18 +249,23 @@ public class BooleanUtils {
/**
* Converts an int to a boolean specifying the conversion values.
*
+ * If the {@code trueValue} and {@code falseValue} are the same number then
+ * the return value will be {@code true} in case {@code value} matches it.
+ *
*
* BooleanUtils.toBoolean(0, 1, 0) = false
* BooleanUtils.toBoolean(1, 1, 0) = true
+ * BooleanUtils.toBoolean(1, 1, 1) = true
* BooleanUtils.toBoolean(2, 1, 2) = false
* BooleanUtils.toBoolean(2, 2, 0) = true
*
*
- * @param value the Integer to convert
+ * @param value the {@code Integer} to convert
* @param trueValue the value to match for {@code true}
* @param falseValue the value to match for {@code false}
* @return {@code true} or {@code false}
- * @throws IllegalArgumentException if no match
+ * @throws IllegalArgumentException if {@code value} does not match neither
+ * {@code trueValue} no {@code falseValue}
*/
public static boolean toBoolean(final int value, final int trueValue, final int falseValue) {
if (value == trueValue) {
@@ -264,7 +274,6 @@ public class BooleanUtils {
if (value == falseValue) {
return false;
}
- // no match
throw new IllegalArgumentException("The Integer did not match either specified value");
}
@@ -298,18 +307,24 @@ public class BooleanUtils {
} else if (value.equals(falseValue)) {
return false;
}
- // no match
throw new IllegalArgumentException("The Integer did not match either specified value");
}
/**
* Converts an int to a Boolean specifying the conversion values.
*
- * NOTE: This returns null and will throw a NullPointerException if unboxed to a boolean.
+ * NOTE: This method may return {@code null} and may throw a {@code NullPointerException}
+ * if unboxed to a {@code boolean}.
+ *
+ * The checks are done first for the {@code trueValue}, then for the {@code falseValue} and
+ * finally for the {@code nullValue}.
*
*
* BooleanUtils.toBooleanObject(0, 0, 2, 3) = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(0, 0, 0, 3) = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(0, 0, 0, 0) = Boolean.TRUE
* BooleanUtils.toBooleanObject(2, 1, 2, 3) = Boolean.FALSE
+ * BooleanUtils.toBooleanObject(2, 1, 2, 2) = Boolean.FALSE
* BooleanUtils.toBooleanObject(3, 1, 2, 3) = null
*
*
@@ -330,18 +345,24 @@ public class BooleanUtils {
if (value == nullValue) {
return null;
}
- // no match
throw new IllegalArgumentException("The Integer did not match any specified value");
}
/**
* Converts an Integer to a Boolean specifying the conversion values.
*
- * NOTE: This returns null and will throw a NullPointerException if unboxed to a boolean.
+ * NOTE: This method may return {@code null} and may throw a {@code NullPointerException}
+ * if unboxed to a {@code boolean}.
*
+ * The checks are done first for the {@code trueValue}, then for the {@code falseValue} and
+ * finally for the {@code nullValue}.
+ **
*
* BooleanUtils.toBooleanObject(Integer.valueOf(0), Integer.valueOf(0), Integer.valueOf(2), Integer.valueOf(3)) = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(Integer.valueOf(0), Integer.valueOf(0), Integer.valueOf(0), Integer.valueOf(3)) = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(Integer.valueOf(0), Integer.valueOf(0), Integer.valueOf(0), Integer.valueOf(0)) = Boolean.TRUE
* BooleanUtils.toBooleanObject(Integer.valueOf(2), Integer.valueOf(1), Integer.valueOf(2), Integer.valueOf(3)) = Boolean.FALSE
+ * BooleanUtils.toBooleanObject(Integer.valueOf(2), Integer.valueOf(1), Integer.valueOf(2), Integer.valueOf(2)) = Boolean.FALSE
* BooleanUtils.toBooleanObject(Integer.valueOf(3), Integer.valueOf(1), Integer.valueOf(2), Integer.valueOf(3)) = null
*
*
@@ -370,7 +391,6 @@ public class BooleanUtils {
} else if (value.equals(nullValue)) {
return null;
}
- // no match
throw new IllegalArgumentException("The Integer did not match any specified value");
}
@@ -378,7 +398,7 @@ public class BooleanUtils {
//-----------------------------------------------------------------------
/**
* Converts a boolean to an int using the convention that
- * {@code zero} is {@code false}.
+ * {@code true} is {@code 1} and {@code false} is {@code 0}.
*
*
* BooleanUtils.toInteger(true) = 1
@@ -394,7 +414,7 @@ public class BooleanUtils {
/**
* Converts a boolean to an Integer using the convention that
- * {@code zero} is {@code false}.
+ * {@code true} is {@code 1} and {@code false} is {@code 0}.
*
*
* BooleanUtils.toIntegerObject(true) = Integer.valueOf(1)
@@ -518,7 +538,8 @@ public class BooleanUtils {
* (case insensitive) will return {@code false}.
* Otherwise, {@code null} is returned.
*
- * NOTE: This returns null and will throw a NullPointerException if unboxed to a boolean.
+ * NOTE: This method may return {@code null} and may throw a {@code NullPointerException}
+ * if unboxed to a {@code boolean}.
*
*
* // N.B. case is not significant
@@ -636,12 +657,19 @@ public class BooleanUtils {
/**
* Converts a String to a Boolean throwing an exception if no match.
*
- * NOTE: This returns null and will throw a NullPointerException if unboxed to a boolean.
+ * NOTE: This method may return {@code null} and may throw a {@code NullPointerException}
+ * if unboxed to a {@code boolean}.
*
*
- * BooleanUtils.toBooleanObject("true", "true", "false", "null") = Boolean.TRUE
- * BooleanUtils.toBooleanObject("false", "true", "false", "null") = Boolean.FALSE
- * BooleanUtils.toBooleanObject("null", "true", "false", "null") = null
+ * BooleanUtils.toBooleanObject("true", "true", "false", "null") = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(null, null, "false", "null") = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(null, null, null, "null") = Boolean.TRUE
+ * BooleanUtils.toBooleanObject(null, null, null, null) = Boolean.TRUE
+ * BooleanUtils.toBooleanObject("false", "true", "false", "null") = Boolean.FALSE
+ * BooleanUtils.toBooleanObject("false", "true", "false", "false") = Boolean.FALSE
+ * BooleanUtils.toBooleanObject(null, "true", null, "false") = Boolean.FALSE
+ * BooleanUtils.toBooleanObject(null, "true", null, null) = Boolean.FALSE
+ * BooleanUtils.toBooleanObject("null", "true", "false", "null") = null
*
*
* @param str the String to check
@@ -735,7 +763,6 @@ public class BooleanUtils {
return false;
}
}
- // no match
throw new IllegalArgumentException("The String did not match either specified value");
}
@@ -884,7 +911,7 @@ public class BooleanUtils {
// logical operations
// ----------------------------------------------------------------------
/**
- * Performs an and on a set of booleans.
+ * Performs an 'and' operation on a set of booleans.
*
*
* BooleanUtils.and(true, true) = true
@@ -895,7 +922,8 @@ public class BooleanUtils {
*
*
* @param array an array of {@code boolean}s
- * @return {@code true} if the and is successful.
+ * @return the result of the logical 'and' operation. That is {@code false}
+ * if any of the parameters is {@code false} and {@code true} otherwise.
* @throws IllegalArgumentException if {@code array} is {@code null}
* @throws IllegalArgumentException if {@code array} is empty.
* @since 3.0.1
@@ -917,7 +945,7 @@ public class BooleanUtils {
}
/**
- * Performs an and on an array of Booleans.
+ * Performs an 'and' operation on an array of Booleans.
*
*
* BooleanUtils.and(Boolean.TRUE, Boolean.TRUE) = Boolean.TRUE
@@ -929,7 +957,8 @@ public class BooleanUtils {
*
*
* @param array an array of {@code Boolean}s
- * @return {@code true} if the and is successful.
+ * @return the result of the logical 'and' operation. That is {@code false}
+ * if any of the parameters is {@code false} and {@code true} otherwise.
* @throws IllegalArgumentException if {@code array} is {@code null}
* @throws IllegalArgumentException if {@code array} is empty.
* @throws IllegalArgumentException if {@code array} contains a {@code null}
@@ -951,7 +980,7 @@ public class BooleanUtils {
}
/**
- * Performs an or on a set of booleans.
+ * Performs an 'or' operation on a set of booleans.
*
*
* BooleanUtils.or(true, true) = true
@@ -963,13 +992,12 @@ public class BooleanUtils {
*
*
* @param array an array of {@code boolean}s
- * @return {@code true} if the or is successful.
+ * @return {@code true} if any of the arguments is {@code true}, and it returns {@code false} otherwise.
* @throws IllegalArgumentException if {@code array} is {@code null}
* @throws IllegalArgumentException if {@code array} is empty.
* @since 3.0.1
*/
public static boolean or(final boolean... array) {
- // Validates input
if (array == null) {
throw new IllegalArgumentException("The Array must not be null");
}
@@ -985,7 +1013,7 @@ public class BooleanUtils {
}
/**
- * Performs an or on an array of Booleans.
+ * Performs an 'or' operation on an array of Booleans.
*
*
* BooleanUtils.or(Boolean.TRUE, Boolean.TRUE) = Boolean.TRUE
@@ -998,7 +1026,7 @@ public class BooleanUtils {
*
*
* @param array an array of {@code Boolean}s
- * @return {@code true} if the or is successful.
+ * @return {@code true} if any of the arguments is {@code true}, and it returns {@code false} otherwise.
* @throws IllegalArgumentException if {@code array} is {@code null}
* @throws IllegalArgumentException if {@code array} is empty.
* @throws IllegalArgumentException if {@code array} contains a {@code null}
@@ -1029,12 +1057,11 @@ public class BooleanUtils {
*
*
* @param array an array of {@code boolean}s
- * @return {@code true} if the xor is successful.
+ * @return the result of the xor operations
* @throws IllegalArgumentException if {@code array} is {@code null}
* @throws IllegalArgumentException if {@code array} is empty.
*/
public static boolean xor(final boolean... array) {
- // Validates input
if (array == null) {
throw new IllegalArgumentException("The Array must not be null");
}
@@ -1058,10 +1085,11 @@ public class BooleanUtils {
* BooleanUtils.xor(new Boolean[] { Boolean.TRUE, Boolean.TRUE }) = Boolean.FALSE
* BooleanUtils.xor(new Boolean[] { Boolean.FALSE, Boolean.FALSE }) = Boolean.FALSE
* BooleanUtils.xor(new Boolean[] { Boolean.TRUE, Boolean.FALSE }) = Boolean.TRUE
+ * BooleanUtils.xor(Boolean.TRUE, Boolean.FALSE, Boolean.FALSE) = Boolean.TRUE
*
*
* @param array an array of {@code Boolean}s
- * @return {@code true} if the xor is successful.
+ * @return the result of the xor operations
* @throws IllegalArgumentException if {@code array} is {@code null}
* @throws IllegalArgumentException if {@code array} is empty.
* @throws IllegalArgumentException if {@code array} contains a {@code null}