Preconditions

java.lang.Object

util.safety.Preconditions

public final class Preconditions extends Object

Since:: 18.06.2021
Author:: Juyas

Constructor Summary

Constructors

Constructor

Description

Preconditions()
Method Summary

Modifier and Type

Method

Description

static void

ensureMainThread(String location)

Test if the current call is executed in the main thread.

static <T> T

nonNull(String name, T obj)

Improve code stability by doing non-null checks inline.

static <T> T

nonNull(T obj)

Improve code stability by doing non-null checks inline.

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

Constructor Details
- Preconditions
  
  public Preconditions()
Method Details
- ensureMainThread
  
  public static void ensureMainThread(String location)
  
  Test if the current call is executed in the main thread. This is especially necessary if you run a mac, since mac doesnt like OpenGl calls in ANY thread except the first one. This method does NOT provide a valid exception if the whole program wasnt launched with VM argument -XstartOnFirstThread, because only with this argument, its guaranteed that the main thread is actually is the first.
- nonNull
  
  public static <T> T nonNull(T obj)
  
  Improve code stability by doing non-null checks inline.
  
  Type Parameters:
  
  T - any type
  
  Parameters:
  
  obj - any object expected to be non-null
  
  Returns:
  
  the object, if and only if its not null. throws a NullPointerException otherwise.
- nonNull
  
  public static <T> T nonNull(String name, T obj)
  
  Improve code stability by doing non-null checks inline.
  
  Type Parameters:
  
  T - any type
  
  Parameters:
  
  obj - any object expected to be non-null
  
  name - the name of the object to improve locating process
  
  Returns:
  
  the object, if and only if its not null. throws a NullPointerException otherwise.