Preconditions (next-events)

构造器
构造器和说明
`Preconditions()`

All Methods Static Methods Concrete Methods
限定符和类型	方法和说明
`static Object`	`checkNull(Object obj)`
`static Object`	`checkNull(Object obj, String message)`
`static void`	`notEmpty(CharSequence value, String message)`
`static void`	`notNull(Object obj)`
`static void`	`notNull(Object obj, String message)`

public static Object checkNull(Object obj,
                               String message)

public static void notNull(Object obj,
                           String message)

public static Object checkNull(Object obj)

public static void notNull(Object obj)

public static void notEmpty(CharSequence value,
                            String message)

类 Preconditions