Preconditions (polling 1.1.3 API)

java.lang.Object
- com.dyngr.util.Preconditions

```
public class Preconditions
extends Object
```
Copied class of Guava's Preconditions. Created by dingye on 17/12/24.

方法概要

所有方法静态方法具体方法
限定符和类型	方法和说明
`static void`	`checkArgument(boolean expression)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean expression, Object errorMessage)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, char p1)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, char p1, char p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, char p1, int p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, char p1, long p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, char p1, Object p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, int p1)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, int p1, char p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, int p1, int p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, int p1, long p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, int p1, Object p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, long p1)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, long p1, char p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, long p1, int p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, long p1, long p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, long p1, Object p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean expression, String errorMessageTemplate, Object... errorMessageArgs)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1, char p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1, int p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1, long p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1, Object p2)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1, Object p2, Object p3)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static void`	`checkArgument(boolean b, String errorMessageTemplate, Object p1, Object p2, Object p3, Object p4)` Ensures the truth of an expression involving one or more parameters to the calling method.
`static int`	`checkElementIndex(int index, int size)` Ensures that `index` specifies a valid element in an array, list or string of size `size`.
`static int`	`checkElementIndex(int index, int size, String desc)` Ensures that `index` specifies a valid element in an array, list or string of size `size`.
`static <T> T`	`checkNotNull(T reference)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T reference, Object errorMessage)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, char p1)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, char p1, char p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, char p1, int p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, char p1, long p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, char p1, Object p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, int p1)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, int p1, char p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, int p1, int p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, int p1, long p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, int p1, Object p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, long p1)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, long p1, char p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, long p1, int p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, long p1, long p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, long p1, Object p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T reference, String errorMessageTemplate, Object... errorMessageArgs)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1, char p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1, int p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1, long p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1, Object p2)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1, Object p2, Object p3)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static <T> T`	`checkNotNull(T obj, String errorMessageTemplate, Object p1, Object p2, Object p3, Object p4)` Ensures that an object reference passed as a parameter to the calling method is not null.
`static int`	`checkPositionIndex(int index, int size)` Ensures that `index` specifies a valid position in an array, list or string of size `size`.
`static int`	`checkPositionIndex(int index, int size, String desc)` Ensures that `index` specifies a valid position in an array, list or string of size `size`.
`static void`	`checkPositionIndexes(int start, int end, int size)` Ensures that `start` and `end` specify a valid positions in an array, list or string of size `size`, and are in order.
`static void`	`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.
`static void`	`checkState(boolean expression, Object errorMessage)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, char p1)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, char p1, char p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, char p1, int p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, char p1, long p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, char p1, Object p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, int p1)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, int p1, char p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, int p1, int p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, int p1, long p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, int p1, Object p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, long p1)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, long p1, char p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, long p1, int p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, long p1, long p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, long p1, Object p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean expression, String errorMessageTemplate, Object... errorMessageArgs)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1, char p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1, int p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1, long p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1, Object p2)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1, Object p2, Object p3)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.
`static void`	`checkState(boolean b, String errorMessageTemplate, Object p1, Object p2, Object p3, Object p4)` Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

checkArgument
```
public static void checkArgument(boolean expression)
```
Ensures the truth of an expression involving one or more parameters to the calling method.

参数:

expression - a boolean expression

抛出:

IllegalArgumentException - if expression is false

checkArgument
```
public static void checkArgument(boolean expression,
                                 @Nullable
                                 Object errorMessage)
```
Ensures the truth of an expression involving one or more parameters to the calling method.

参数:

expression - a boolean expression

errorMessage - the exception message to use if the check fails; will be converted to a string using String.valueOf(Object)

抛出:

IllegalArgumentException - if expression is false

checkArgument
```
public static void checkArgument(boolean expression,
                                 @Nullable
                                 String errorMessageTemplate,
                                 @Nullable
                                 Object... errorMessageArgs)
```
Ensures the truth of an expression involving one or more parameters to the calling method.

参数:

expression - a boolean expression

errorMessageTemplate - a template for the exception message should the check fail. The message is formed by replacing each %s placeholder in the template with an argument. These are matched by position - the first %s gets errorMessageArgs[0], etc. Unmatched arguments will be appended to the formatted message in square braces. Unmatched placeholders will be left as-is.

errorMessageArgs - the arguments to be substituted into the message template. Arguments are converted to strings using String.valueOf(Object).

抛出:

IllegalArgumentException - if expression is false

NullPointerException - if the check fails and either errorMessageTemplate or errorMessageArgs is null (don't let this happen)