Package net.lax1dude.eaglercraft.v1_8.netty

Class ObjectUtil

  • public final class ObjectUtil
extends java.lang.Object
    A grab-bag of useful utility methods.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static int checkInRange​(int i, int start, int end, java.lang.String name)
      Checks that the given argument is in range.
      static long checkInRange​(long l, long start, long end, java.lang.String name)
      Checks that the given argument is in range.
      static byte[] checkNonEmpty​(byte[] array, java.lang.String name)
      Checks that the given argument is neither null nor empty.
      static char[] checkNonEmpty​(char[] array, java.lang.String name)
      Checks that the given argument is neither null nor empty.
      static java.lang.CharSequence checkNonEmpty​(java.lang.CharSequence value, java.lang.String name)
      Checks that the given argument is neither null nor empty.
      static java.lang.String checkNonEmpty​(java.lang.String value, java.lang.String name)
      Checks that the given argument is neither null nor empty.
      static <T> T[] checkNonEmpty​(T[] array, java.lang.String name)
      Checks that the given argument is neither null nor empty.
      static <T extends java.util.Collection<?>>
      T      		 checkNonEmpty​(T collection, java.lang.String name)
      Checks that the given argument is neither null nor empty.
      static java.lang.String checkNonEmptyAfterTrim​(java.lang.String value, java.lang.String name)
      Trims the given argument and checks whether it is neither null nor empty.
      static <T> T checkNotNull​(T arg, java.lang.String text)
      Checks that the given argument is not null.
      static <T> T checkNotNullArrayParam​(T value, int index, java.lang.String name)
      Checks that the given argument is not null.
      static <T> T checkNotNullWithIAE​(T arg, java.lang.String paramName)
      Checks that the given argument is not null.
      static double checkPositive​(double d, java.lang.String name)
      Checks that the given argument is strictly positive.
      static float checkPositive​(float f, java.lang.String name)
      Checks that the given argument is strictly positive.
      static int checkPositive​(int i, java.lang.String name)
      Checks that the given argument is strictly positive.
      static long checkPositive​(long l, java.lang.String name)
      Checks that the given argument is strictly positive.
      static double checkPositiveOrZero​(double d, java.lang.String name)
      Checks that the given argument is positive or zero.
      static float checkPositiveOrZero​(float f, java.lang.String name)
      Checks that the given argument is positive or zero.
      static int checkPositiveOrZero​(int i, java.lang.String name)
      Checks that the given argument is positive or zero.
      static long checkPositiveOrZero​(long l, java.lang.String name)
      Checks that the given argument is positive or zero.
      static <T> T[] deepCheckNotNull​(java.lang.String text, T... varargs)
      Check that the given varargs is not null and does not contain elements null elements.
      static int intValue​(java.lang.Integer wrapper, int defaultValue)
      Resolves a possibly null Integer to a primitive int, using a default value.
      static long longValue​(java.lang.Long wrapper, long defaultValue)
      Resolves a possibly null Long to a primitive long, using a default value.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • checkNotNull

        public static <T> T checkNotNull​(T arg,
                                 java.lang.String text)
        Checks that the given argument is not null. If it is, throws NullPointerException. Otherwise, returns the argument.

      • deepCheckNotNull

        public static <T> T[] deepCheckNotNull​(java.lang.String text,
                                       T... varargs)
        Check that the given varargs is not null and does not contain elements null elements. If it is, throws NullPointerException. Otherwise, returns the argument.

      • checkNotNullWithIAE

        public static <T> T checkNotNullWithIAE​(T arg,
                                        java.lang.String paramName)
                                 throws java.lang.IllegalArgumentException
        Checks that the given argument is not null. If it is, throws IllegalArgumentException. Otherwise, returns the argument.
        Throws:
        java.lang.IllegalArgumentException

      • checkNotNullArrayParam

        public static <T> T checkNotNullArrayParam​(T value,
                                           int index,
                                           java.lang.String name)
                                    throws java.lang.IllegalArgumentException
        Checks that the given argument is not null. If it is, throws IllegalArgumentException. Otherwise, returns the argument.
        Type Parameters:
        T - type of the given argument value.
        Parameters:
        name - of the parameter, belongs to the exception message.
        index - of the array, belongs to the exception message.
        value - to check.
        Returns:
        the given argument value.
        Throws:
        java.lang.IllegalArgumentException - if value is null.

      • checkPositive

        public static int checkPositive​(int i,
                                java.lang.String name)
        Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositive

        public static long checkPositive​(long l,
                                 java.lang.String name)
        Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositive

        public static double checkPositive​(double d,
                                   java.lang.String name)
        Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositive

        public static float checkPositive​(float f,
                                  java.lang.String name)
        Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositiveOrZero

        public static int checkPositiveOrZero​(int i,
                                      java.lang.String name)
        Checks that the given argument is positive or zero. If it is not , throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositiveOrZero

        public static long checkPositiveOrZero​(long l,
                                       java.lang.String name)
        Checks that the given argument is positive or zero. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositiveOrZero

        public static double checkPositiveOrZero​(double d,
                                         java.lang.String name)
        Checks that the given argument is positive or zero. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkPositiveOrZero

        public static float checkPositiveOrZero​(float f,
                                        java.lang.String name)
        Checks that the given argument is positive or zero. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkInRange

        public static int checkInRange​(int i,
                               int start,
                               int end,
                               java.lang.String name)
        Checks that the given argument is in range. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkInRange

        public static long checkInRange​(long l,
                                long start,
                                long end,
                                java.lang.String name)
        Checks that the given argument is in range. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static <T> T[] checkNonEmpty​(T[] array,
                                    java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static byte[] checkNonEmpty​(byte[] array,
                                   java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static char[] checkNonEmpty​(char[] array,
                                   java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static <T extends java.util.Collection<?>> T checkNonEmpty​(T collection,
                                                                  java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static java.lang.String checkNonEmpty​(java.lang.String value,
                                             java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static <K,​V,​T extends java.util.Map<K,​V>> T checkNonEmpty​(T value,
                                                                                   java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmpty

        public static java.lang.CharSequence checkNonEmpty​(java.lang.CharSequence value,
                                                   java.lang.String name)
        Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

      • checkNonEmptyAfterTrim

        public static java.lang.String checkNonEmptyAfterTrim​(java.lang.String value,
                                                      java.lang.String name)
        Trims the given argument and checks whether it is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the trimmed argument.
        Parameters:
        value - to trim and check.
        name - of the parameter.
        Returns:
        the trimmed (not the original) value.
        Throws:
        java.lang.NullPointerException - if value is null.
        java.lang.IllegalArgumentException - if the trimmed value is empty.

      • intValue

        public static int intValue​(java.lang.Integer wrapper,
                           int defaultValue)
        Resolves a possibly null Integer to a primitive int, using a default value.
        Parameters:
        wrapper - the wrapper
        defaultValue - the default value
        Returns:
        the primitive value

      • longValue

        public static long longValue​(java.lang.Long wrapper,
                             long defaultValue)
        Resolves a possibly null Long to a primitive long, using a default value.
        Parameters:
        wrapper - the wrapper
        defaultValue - the default value
        Returns:
        the primitive value