org.apache.hc.core5.util

## Class Args

- java.lang.Object
- - org.apache.hc.core5.util.Args

-     public class Args
      extends Object

- - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `check(boolean expression, String message)`
    `static void` | `check(boolean expression, String message, Object... args)`
    `static void` | `check(boolean expression, String message, Object arg)`
    `static long` | `checkContentLength(EntityDetails entityDetails)`
    `static int` | `checkRange(int value, int lowInclusive, int highInclusive, String message)`
    `static long` | `checkRange(long value, long lowInclusive, long highInclusive, String message)`
    `static <T extends CharSequence> T` | `containsNoBlanks(T argument, String name)`
    `static boolean` | `isEmpty(Object object)` Checks if an Object is empty or null.
    `static <T extends CharSequence> T` | `notBlank(T argument, String name)`
    `static <E,T extends Collection<E>> T` | `notEmpty(T argument, String name)`
    `static <T> T` | `notEmpty(T argument, String name)`
    `static <T extends CharSequence> T` | `notEmpty(T argument, String name)`
    `static int` | `notNegative(int n, String name)`
    `static long` | `notNegative(long n, String name)`
    `static <T> T` | `notNull(T argument, String name)` Validate that the specified argument is not `null`; otherwise throwing an exception with the specified message.
    `static int` | `positive(int n, String name)`
    `static long` | `positive(long n, String name)`
    `static <T extends TimeValue> T` | `positive(T timeValue, String name)`

    - ### Methods inherited from class java.lang.Object

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

- - ### Method Detail

    - #### check

          public static void check(boolean expression,
                                   String message)

    - #### check

          public static void check(boolean expression,
                                   String message,
                                   Object... args)

    - #### check

          public static void check(boolean expression,
                                   String message,
                                   Object arg)

    - #### checkContentLength

          public static long checkContentLength(EntityDetails entityDetails)

    - #### checkRange

          public static int checkRange(int value,
                                       int lowInclusive,
                                       int highInclusive,
                                       String message)

    - #### checkRange

          public static long checkRange(long value,
                                        long lowInclusive,
                                        long highInclusive,
                                        String message)

    - #### containsNoBlanks

          public static <T extends CharSequence> T containsNoBlanks(T argument,
                                                                    String name)

    - #### notBlank

          public static <T extends CharSequence> T notBlank(T argument,
                                                            String name)

    - #### notEmpty

          public static <T extends CharSequence> T notEmpty(T argument,
                                                            String name)

    - #### notEmpty

          public static <E,T extends Collection<E>> T notEmpty(T argument,
                                                               String name)

    - #### notEmpty

          public static <T> T notEmpty(T argument,
                                       String name)

    - #### notNegative

          public static int notNegative(int n,
                                        String name)

    - #### notNegative

          public static long notNegative(long n,
                                         String name)

    - #### notNull

          public static <T> T notNull(T argument,
                                      String name)

      Validate that the specified argument is not `null`; otherwise throwing an exception with the specified message.

          Args.notNull(myObject, "The object must not be null");

      Type Parameters:
        `T` - the object type
      Parameters:
        `argument` - the object to check
        `name` - the `String` exception message if invalid, not null
      Returns:
        the validated object (never `null` for method chaining)
      Throws:
        `NullPointerException` - if the object is `null`

    - #### isEmpty

          public static boolean isEmpty(Object object)

      Checks if an Object is empty or null.

      The following types are supported:
      - `CharSequence`: Considered empty if its length is zero.
      - `Array`: Considered empty if its length is zero.
      - `Collection`: Considered empty if it has zero elements.
      - `Map`: Considered empty if it has zero key-value mappings.

           Args.isEmpty(null)             = true
           Args.isEmpty("")               = true
           Args.isEmpty("ab")             = false
           Args.isEmpty(new int[]{})      = true
           Args.isEmpty(new int[]{1,2,3}) = false
           Args.isEmpty(1234)             = false

      Parameters:
        `object` - the `Object` to test, may be `null`
      Returns:
        `true` if the object has a supported type and is empty or null, `false` otherwise
      Since:
        5.1

    - #### positive

          public static int positive(int n,
                                     String name)

    - #### positive

          public static long positive(long n,
                                      String name)

    - #### positive

          public static <T extends TimeValue> T positive(T timeValue,
                                                         String name)

Copyright © 2005–2021 The Apache Software Foundation. All rights reserved.