All Implemented Interfaces:
```
public class Validate

                    
```
Static convenience methods that help a method or constructor check whether it was invoked correctly (whether its preconditions have been met).
These methods generally accept a boolean expression which is expected to be true (or in the case of checkNotNull, an object reference which is expected to be non-null). When false (or null) is passed instead, the Preconditions method throws an unchecked exception, which helps the calling method communicate to its caller that that caller has made a mistake.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`public final static Validate`	`INSTANCE`

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final static Unit`	`checkArgument(Boolean expression, String errorMessage)`	Ensure the truth of an expression involving one or more parameters to the calling method.
`final static Unit`	`checkArgument(Boolean expression)`	Ensure the truth of an expression involving one or more parameters to the calling method.
`final static Unit`	`checkState(Boolean expression, String errorMessage)`	Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`final static Unit`	`checkState(Boolean expression)`	Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`final static <T extends Any> T`	`checkNotNull(T reference, String errorMessage)`	Ensures that an object reference passed as a parameter to the calling method is not null.
`final static <T extends Any> T`	`checkNotNull(T reference)`	Ensures that an object reference passed as a parameter to the calling method is not null.
`final static <T extends Comparable<T>> T`	`checkGreaterThan(T value, T lowerBoundExclusive, String errorMessage)`	Ensures that a value passed as a parameter to the calling method is strictly greater than lowerBoundExclusive.
`final static <T extends Comparable<T>> T`	`checkGreaterThan(T value, T lowerBoundExclusive)`	Ensures that a value passed as a parameter to the calling method is strictly greater than lowerBoundExclusive.
`final static <T extends Comparable<T>> T`	`checkGreaterThanOrEqualTo(T value, T lowerBoundInclusive, String errorMessage)`	Ensures that a value passed as a parameter to the calling method is greater than or equal to lowerBoundInclusive.
`final static <T extends Comparable<T>> T`	`checkGreaterThanOrEqualTo(T value, T lowerBoundInclusive)`	Ensures that a value passed as a parameter to the calling method is greater than or equal to lowerBoundInclusive.
`final static <T extends Comparable<T>> T`	`checkLessThan(T value, T upperBoundExclusive, String errorMessage)`	Ensures that a value passed as a parameter to the calling method is strictly less than upperBoundExclusive.
`final static <T extends Comparable<T>> T`	`checkLessThan(T value, T upperBoundExclusive)`	Ensures that a value passed as a parameter to the calling method is strictly less than upperBoundExclusive.
`final static <T extends Comparable<T>> T`	`checkLessThanOrEqualTo(T value, T upperBoundInclusive, String errorMessage)`	Ensures that a `value` passed as a parameter to the calling method is less than or equal to `upperBoundInclusive`.
`final static <T extends Comparable<T>> T`	`checkLessThanOrEqualTo(T value, T upperBoundInclusive)`	Ensures that a `value` passed as a parameter to the calling method is less than or equal to `upperBoundInclusive`.
`final static <C extends Collection<T>, T extends Any> C`	`checkCollectionElementsNotNull(C value, String valueName)`	Ensures that the Collection is not `null`, and none of its elements are `null`.
`final static <C extends Collection<T>, T extends Any> C`	`checkCollectionNotEmpty(C value, String valueName)`	Ensures that the Collection is not `null`, and contains at least one element.
`final static <M extends Map<K, V>, K extends Any, V extends Any> M`	`checkMapNotEmpty(M value, String valueName)`	Ensures that the Map is not 'null', and contains at least one entry.
`final static String`	`checkStringNotBlank(String string, String errorMessage)`	Ensures that an string reference passed as a parameter to the calling method is not blank.
`final static String`	`checkStringNotBlank(String string)`	Ensures that an string reference passed as a parameter to the calling method is not blank.
`final static Unit`	`checkNotMainThread(String errorMessage)`	Checks if the current thread is not the main thread, otherwise throws.
`final static Unit`	`checkNotMainThread()`	Checks if the current thread is not the main thread, otherwise throws.
`final static Unit`	`checkMainThread(String errorMessage)`	Checks if the current thread is the main thread, otherwise throws.
`final static Unit`	`checkMainThread()`	Checks if the current thread is the main thread, otherwise throws.
`final static Boolean`	`hasPermission(Context context, String permission)`	Check if application have the given permission.
`final static Boolean`	`hasReadPhonePermission(Context context)`	Check if application have the Manifest.permission.READ_PHONE_STATE permission.
`final static Boolean`	`hasLocationPermission(Context context)`	Check if application have the Manifest.permission.ACCESS_COARSE_LOCATION or Manifest.permission.ACCESS_FINE_LOCATION permission.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
- Method Detail
  - checkArgument
```
@JvmOverloads() final static Unit checkArgument(Boolean expression, String errorMessage)
```
    Ensure the truth of an expression involving one or more parameters to the calling method.
    
    Parameters:
    
    expression - a boolean expression
    
    errorMessage - the exception message to use if the check fails
  - checkArgument
```
@JvmOverloads() final static Unit checkArgument(Boolean expression)
```
    Ensure the truth of an expression involving one or more parameters to the calling method.
    
    Parameters:
    
    expression - a boolean expression
  - checkState
```
@JvmOverloads() final static Unit checkState(Boolean expression, String errorMessage)
```
    Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
    
    Parameters:
    
    expression - a boolean expression
    
    errorMessage - the exception message to use if the check fails
  - checkState
```
@JvmOverloads() final static Unit checkState(Boolean expression)
```
    Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
    
    Parameters:
    
    expression - a boolean expression
  - checkNotNull
```
@JvmOverloads() final static <T extends Any> T checkNotNull(T reference, String errorMessage)
```
    Ensures that an object reference passed as a parameter to the calling method is not null.
    
    Parameters:
    
    reference - an object reference
    
    errorMessage - the exception message to use if the check fails
    
    Returns:
    
    the non-null reference that was validated
  - checkNotNull
```
@JvmOverloads() final static <T extends Any> T checkNotNull(T reference)
```
    Ensures that an object reference passed as a parameter to the calling method is not null.
    
    Parameters:
    
    reference - an object reference
    
    Returns:
    
    the non-null reference that was validated
  - checkGreaterThan
```
@JvmOverloads() final static <T extends Comparable<T>> T checkGreaterThan(T value, T lowerBoundExclusive, String errorMessage)
```
    Ensures that a value passed as a parameter to the calling method is strictly greater than lowerBoundExclusive.
    
    Parameters:
    
    value - a comparable value
    
    lowerBoundExclusive - the exclusive lower bound
    
    errorMessage - the exception message to use if the check fails
    
    Returns:
    
    the reference that was validated
  - checkGreaterThan
```
@JvmOverloads() final static <T extends Comparable<T>> T checkGreaterThan(T value, T lowerBoundExclusive)
```
    Ensures that a value passed as a parameter to the calling method is strictly greater than lowerBoundExclusive.
    
    Parameters:
    
    value - a comparable value
    
    lowerBoundExclusive - the exclusive lower bound
    
    Returns:
    
    the reference that was validated
  - checkGreaterThanOrEqualTo
```
@JvmOverloads() final static <T extends Comparable<T>> T checkGreaterThanOrEqualTo(T value, T lowerBoundInclusive, String errorMessage)
```
    Ensures that a value passed as a parameter to the calling method is greater than or equal to lowerBoundInclusive.
    
    Parameters:
    
    value - a comparable value
    
    lowerBoundInclusive - the inclusive lower bound
    
    errorMessage - the exception message to use if the check fails
    
    Returns:
    
    the reference that was validated
  - checkGreaterThanOrEqualTo
```
@JvmOverloads() final static <T extends Comparable<T>> T checkGreaterThanOrEqualTo(T value, T lowerBoundInclusive)
```
    Ensures that a value passed as a parameter to the calling method is greater than or equal to lowerBoundInclusive.
    
    Parameters:
    
    value - a comparable value
    
    lowerBoundInclusive - the inclusive lower bound
    
    Returns:
    
    the reference that was validated
  - checkLessThan
```
@JvmOverloads() final static <T extends Comparable<T>> T checkLessThan(T value, T upperBoundExclusive, String errorMessage)
```
    Ensures that a value passed as a parameter to the calling method is strictly less than upperBoundExclusive.
    
    Parameters:
    
    value - a comparable value
    
    upperBoundExclusive - the exclusive upper bound
    
    errorMessage - the exception message to use if the check fails
    
    Returns:
    
    the reference that was validated
  - checkLessThan
```
@JvmOverloads() final static <T extends Comparable<T>> T checkLessThan(T value, T upperBoundExclusive)
```
    Ensures that a value passed as a parameter to the calling method is strictly less than upperBoundExclusive.
    
    Parameters:
    
    value - a comparable value
    
    upperBoundExclusive - the exclusive upper bound
    
    Returns:
    
    the reference that was validated
  - checkLessThanOrEqualTo
```
@JvmOverloads() final static <T extends Comparable<T>> T checkLessThanOrEqualTo(T value, T upperBoundInclusive, String errorMessage)
```
    Ensures that a value passed as a parameter to the calling method is less than or equal to upperBoundInclusive.
    
    Parameters:
    
    value - a comparable value
    
    upperBoundInclusive - the inclusive upper bound
    
    errorMessage - the exception message to use if the check fails
    
    Returns:
    
    the reference that was validated
  - checkLessThanOrEqualTo
```
@JvmOverloads() final static <T extends Comparable<T>> T checkLessThanOrEqualTo(T value, T upperBoundInclusive)
```
    Ensures that a value passed as a parameter to the calling method is less than or equal to upperBoundInclusive.
    
    Parameters:
    
    value - a comparable value
    
    upperBoundInclusive - the inclusive upper bound
    
    Returns:
    
    the reference that was validated
  - checkCollectionElementsNotNull
```
 final static <C extends Collection<T>, T extends Any> C checkCollectionElementsNotNull(C value, String valueName)
```
    Ensures that the Collection is not null, and none of its elements are null.
    
    Parameters:
    
    value - a Collection of boxed objects
    
    valueName - the name of the argument to use if the check fails
    
    Returns:
    
    the validated Collection
  - checkCollectionNotEmpty
```
 final static <C extends Collection<T>, T extends Any> C checkCollectionNotEmpty(C value, String valueName)
```
    Ensures that the Collection is not null, and contains at least one element.
    
    Parameters:
    
    value - a Collection of boxed elements.
    
    valueName - the name of the argument to use if the check fails.
    
    Returns:
    
    the validated Collection
  - checkMapNotEmpty
```
 final static <M extends Map<K, V>, K extends Any, V extends Any> M checkMapNotEmpty(M value, String valueName)
```
    Ensures that the Map is not 'null', and contains at least one entry.
    
    Parameters:
    
    value - a Map.
    
    valueName - the name of the argument to use if the check fails.
    
    Returns:
    
    the validated Map
  - checkStringNotBlank
```
@JvmOverloads() final static String checkStringNotBlank(String string, String errorMessage)
```
    Ensures that an string reference passed as a parameter to the calling method is not blank.
    
    Parameters:
    
    string - a String value
    
    errorMessage - the exception message to use if the check fails
    
    Returns:
    
    the validated String
  - checkStringNotBlank
```
@JvmOverloads() final static String checkStringNotBlank(String string)
```
    Ensures that an string reference passed as a parameter to the calling method is not blank.
    
    Parameters:
    
    string - a String value
    
    Returns:
    
    the validated String
  - checkNotMainThread
```
@JvmOverloads() final static Unit checkNotMainThread(String errorMessage)
```
    Checks if the current thread is not the main thread, otherwise throws.
    
    Parameters:
    
    errorMessage - the exception message to use if the check fails.
  - checkNotMainThread
```
@JvmOverloads() final static Unit checkNotMainThread()
```
    Checks if the current thread is not the main thread, otherwise throws.
  - checkMainThread
```
@JvmOverloads() final static Unit checkMainThread(String errorMessage)
```
    Checks if the current thread is the main thread, otherwise throws.
    
    Parameters:
    
    errorMessage - the exception message to use if the check fails.
  - checkMainThread
```
@JvmOverloads() final static Unit checkMainThread()
```
    Checks if the current thread is the main thread, otherwise throws.
  - hasPermission
```
 final static Boolean hasPermission(Context context, String permission)
```
    Check if application have the given permission.
    
    Parameters:
    
    context - the context.
    
    permission - the permissions you want to check.
    
    Returns:
    
    the true if application have permission, false otherwise.
  - hasReadPhonePermission
```
 final static Boolean hasReadPhonePermission(Context context)
```
    Check if application have the Manifest.permission.READ_PHONE_STATE permission.
    
    Parameters:
    
    context - the context.
    
    Returns:
    
    the true if application have permission, false otherwise.
  - hasLocationPermission
```
 final static Boolean hasLocationPermission(Context context)
```
    Check if application have the Manifest.permission.ACCESS_COARSE_LOCATION or Manifest.permission.ACCESS_FINE_LOCATION permission.
    
    Parameters:
    
    context - the context.
    
    Returns:
    
    the true if application have permission, false otherwise.

Object Validate

Nested Class Summary

Field Summary

Constructor Summary

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Method Detail

checkArgument

checkArgument

checkState

checkState

checkNotNull

checkNotNull

checkGreaterThan

checkGreaterThan

checkGreaterThanOrEqualTo

checkGreaterThanOrEqualTo

checkLessThan

checkLessThan

checkLessThanOrEqualTo

checkLessThanOrEqualTo

checkCollectionElementsNotNull

checkCollectionNotEmpty

checkMapNotEmpty

checkStringNotBlank

checkStringNotBlank

checkNotMainThread

checkNotMainThread

checkMainThread

checkMainThread

hasPermission

hasReadPhonePermission

hasLocationPermission