程序包 com.ts.lib.common.util

类 Assertions

java.lang.Object

com.ts.lib.common.util.Assertions

public final class Assertions
extends Object

提供一种断言表达式和属性的断言方法

作者:

Li Junchao

方法概要

修饰符和类型	方法	说明
static void	checkArgument(boolean expression)	Throws IllegalArgumentException if expression evaluates to false.
static void	checkArgument(boolean expression, Object errorMessage)	Throws IllegalArgumentException if expression evaluates to false.
static int	checkIndex(int index, int start, int limit)	Throws IndexOutOfBoundsException if index falls outside the specified bounds.
static void	checkMainThread()	Throws IllegalStateException if the calling thread is not the application's main thread.
static String	checkNotEmpty(String string)	Throws IllegalArgumentException if string is null or zero length.
static String	checkNotEmpty(String string, Object errorMessage)	Throws IllegalArgumentException if string is null or zero length.
static <T> T	checkNotNull(T reference)	Throws NullPointerException if reference is null.
static <T> T	checkNotNull(T reference, Object errorMessage)	Throws NullPointerException if reference is null.
static void	checkState(boolean expression)	Throws IllegalStateException if expression evaluates to false.
static void	checkState(boolean expression, Object errorMessage)	Throws IllegalStateException if expression evaluates to false.
static <T> T	checkStateNotNull(T reference)	Throws IllegalStateException if reference is null.
static <T> T	checkStateNotNull(T reference, Object errorMessage)	Throws IllegalStateException if reference is null.

从类继承的方法 java.lang.Object

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

方法详细资料

checkArgument

public static void checkArgument(boolean expression)

Throws IllegalArgumentException if expression evaluates to false.

参数:

expression - The expression to evaluate.

抛出:

IllegalArgumentException - If expression is false.

checkArgument

public static void checkArgument(boolean expression,
                                 Object errorMessage)

Throws IllegalArgumentException if expression evaluates to false.

参数:

expression - The expression to evaluate.

errorMessage - The exception message if an exception is thrown. The message is converted to a String using String.valueOf(Object).

抛出:

IllegalArgumentException - If expression is false.

checkIndex

public static int checkIndex(int index,
                             int start,
                             int limit)

Throws IndexOutOfBoundsException if index falls outside the specified bounds.

参数:

index - The index to test.

start - The start of the allowed range (inclusive).

limit - The end of the allowed range (exclusive).

返回:

The index that was validated.

抛出:

IndexOutOfBoundsException - If index falls outside the specified bounds.

checkState

public static void checkState(boolean expression)

Throws IllegalStateException if expression evaluates to false.

参数:

expression - The expression to evaluate.

抛出:

IllegalStateException - If expression is false.

checkState

public static void checkState(boolean expression,
                              Object errorMessage)

Throws IllegalStateException if expression evaluates to false.

参数:

expression - The expression to evaluate.

errorMessage - The exception message if an exception is thrown. The message is converted to a String using String.valueOf(Object).

抛出:

IllegalStateException - If expression is false.

checkStateNotNull

public static <T> T checkStateNotNull(@Nullable
                                      T reference)

Throws IllegalStateException if reference is null.

类型参数:

T - The type of the reference.

参数:

reference - The reference.

返回:

The non-null reference that was validated.

抛出:

IllegalStateException - If reference is null.

checkStateNotNull

public static <T> T checkStateNotNull(@Nullable
                                      T reference,
                                      Object errorMessage)

Throws IllegalStateException if reference is null.

类型参数:

T - The type of the reference.

参数:

reference - The reference.

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

返回:

The non-null reference that was validated.

抛出:

IllegalStateException - If reference is null.

checkNotNull

public static <T> T checkNotNull(@Nullable
                                 T reference)

Throws NullPointerException if reference is null.

类型参数:

T - The type of the reference.

参数:

reference - The reference.

返回:

The non-null reference that was validated.

抛出:

NullPointerException - If reference is null.

checkNotNull

public static <T> T checkNotNull(@Nullable
                                 T reference,
                                 Object errorMessage)

Throws NullPointerException if reference is null.

类型参数:

T - The type of the reference.

参数:

reference - The reference.

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

返回:

The non-null reference that was validated.

抛出:

NullPointerException - If reference is null.

checkNotEmpty

public static String checkNotEmpty(@Nullable
                                   String string)

Throws IllegalArgumentException if string is null or zero length.

参数:

string - The string to check.

返回:

The non-null, non-empty string that was validated.

抛出:

IllegalArgumentException - If string is null or 0-length.

checkNotEmpty

public static String checkNotEmpty(@Nullable
                                   String string,
                                   Object errorMessage)

Throws IllegalArgumentException if string is null or zero length.

参数:

string - The string to check.

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

返回:

The non-null, non-empty string that was validated.

抛出:

IllegalArgumentException - If string is null or 0-length.

checkMainThread

public static void checkMainThread()

Throws IllegalStateException if the calling thread is not the application's main thread.

抛出:

IllegalStateException - If the calling thread is not the application's main thread.