org.ujorm.tools

Class Check

java.lang.Object

org.ujorm.tools.Check

public abstract class Check
extends Object

Common checker. See the next positive tests:

  Check.hasLength("ABC");
  Check.hasLength(new char[]{'A', 'B', 'C'});
  Check.hasLength(new StringBuilder().append("ABC"));
  Check.hasLength(Arrays.asList("A", "B", "C"));

  Check.isEmpty("");
  Check.isEmpty(new char[0]);
  Check.isEmpty(new StringBuilder());
  Check.isEmpty((List) null);
 

Since:

1.73

Method Summary

Modifier and Type	Method and Description
static <T> boolean	firstItem(T value, T... array) Method returns true if the first item equals the value
static boolean	hasLength(byte[] array) Checks if the argument is not empty, nor null.
static boolean	hasLength(Collection<?> values) Checks if the argument is not empty, nor null.
static boolean	hasLength(char[] array) Checks if the argument is not empty, nor null.
static boolean	hasLength(CharSequence value) Checks if the argument is not empty, nor null.
static boolean	hasLength(Map<?,?> values) Checks if the argument is not empty, nor null.
static <T> boolean	hasLength(T... array) Checks if the argument is not empty, nor null.
static boolean	isEmpty(byte[] array) Checks if the argument is empty or null.
static boolean	isEmpty(Collection<?> value) Checks if the argument is empty or null.
static boolean	isEmpty(char[] array) Checks if the argument is empty or null.
static boolean	isEmpty(CharSequence value) Checks if the argument is empty or null.
static boolean	isEmpty(Map<?,?> value) Checks if the argument is empty or null.
static <T> boolean	isEmpty(T... array) Checks if the argument is empty or null.

Methods inherited from class java.lang.Object

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

Method Detail

hasLength

public static boolean hasLength(@Nullable
                                byte[] array)

Checks if the argument is not empty, nor null.

hasLength

public static boolean hasLength(@Nullable
                                char[] array)

Checks if the argument is not empty, nor null.

hasLength

public static <T> boolean hasLength(@Nullable
                                    T... array)

Checks if the argument is not empty, nor null.

hasLength

public static boolean hasLength(@Nullable
                                Collection<?> values)

Checks if the argument is not empty, nor null.

hasLength

public static boolean hasLength(@Nullable
                                Map<?,?> values)

Checks if the argument is not empty, nor null.

hasLength

public static boolean hasLength(@Nullable
                                CharSequence value)

Checks if the argument is not empty, nor null.

isEmpty

public static boolean isEmpty(@Nullable
                              byte[] array)

Checks if the argument is empty or null.

isEmpty

public static boolean isEmpty(@Nullable
                              char[] array)

Checks if the argument is empty or null.

isEmpty

public static <T> boolean isEmpty(@Nullable
                                  T... array)

Checks if the argument is empty or null.

isEmpty

public static boolean isEmpty(@Nullable
                              Collection<?> value)

Checks if the argument is empty or null.

isEmpty

public static boolean isEmpty(@Nullable
                              Map<?,?> value)

Checks if the argument is empty or null.

isEmpty

public static boolean isEmpty(@Nullable
                              CharSequence value)

Checks if the argument is empty or null.

firstItem

public static <T> boolean firstItem(@Nullable
                                    T value,
                                    @Nullable
                                    T... array)

Method returns true if the first item equals the value