com.google.common.base

类 ConditionChecks

java.lang.Object

com.google.common.base.ConditionChecks

public class ConditionChecks
extends java.lang.Object

条件检查工具类

作者:

guyadong

方法概要

限定符和类型	方法和说明
static <T,X extends java.lang.Throwable> T	checkNotNull(T reference, java.lang.Class<X> declareType, java.lang.String errorMessageTemplate, java.lang.Object... errorMessageArgs) reference为null时抛出 declareType 异常
static <T,X extends java.lang.Throwable> T	checkNotNull(T reference, java.lang.Class<X> declareType, java.lang.String errorMessageTemplate, java.lang.Object p1) reference为null时抛出 declareType 异常 See #checkNotNull(boolean, Class, String, Object...) for details.
static <X extends java.lang.Throwable> void	checkTrue(boolean b, java.lang.Class<X> declareType, java.lang.String errorMessageTemplate, java.lang.Object... errorMessageArgs) 执行表达式,为false时抛出 declareType 异常
static <X extends java.lang.Throwable> void	checkTrue(boolean b, java.lang.Class<X> declareType, java.lang.String errorMessageTemplate, java.lang.Object p1) 执行表达式,为false时抛出 declareType 异常 See checkTrue(boolean, Class, String, Object...) for details.

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

checkTrue

public static <X extends java.lang.Throwable> void checkTrue(boolean b,
                                                             java.lang.Class<X> declareType,
                                                             @Nullable
                                                             java.lang.String errorMessageTemplate,
                                                             @Nullable
                                                             java.lang.Object... errorMessageArgs)
                                                      throws X extends java.lang.Throwable

执行表达式,为false时抛出 declareType 异常

类型参数:

X - 抛出异常类型

参数:

b -

declareType - 异常类型

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:

X

X extends java.lang.Throwable

checkTrue

public static <X extends java.lang.Throwable> void checkTrue(boolean b,
                                                             java.lang.Class<X> declareType,
                                                             @Nullable
                                                             java.lang.String errorMessageTemplate,
                                                             @Nullable
                                                             java.lang.Object p1)
                                                      throws X extends java.lang.Throwable

执行表达式,为false时抛出 declareType 异常

See checkTrue(boolean, Class, String, Object...) for details.

抛出:

X

X extends java.lang.Throwable

checkNotNull

public static <T,X extends java.lang.Throwable> T checkNotNull(T reference,
                                                               java.lang.Class<X> declareType,
                                                               @Nullable
                                                               java.lang.String errorMessageTemplate,
                                                               @Nullable
                                                               java.lang.Object... errorMessageArgs)
                                                        throws X extends java.lang.Throwable

reference为null时抛出 declareType 异常

类型参数:

T - 对象类型

X - 抛出异常类型

参数:

reference -

declareType - 异常类型

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).

返回:

抛出:

X

X extends java.lang.Throwable

checkNotNull

public static <T,X extends java.lang.Throwable> T checkNotNull(T reference,
                                                               java.lang.Class<X> declareType,
                                                               @Nullable
                                                               java.lang.String errorMessageTemplate,
                                                               @Nullable
                                                               java.lang.Object p1)
                                                        throws X extends java.lang.Throwable

reference为null时抛出 declareType 异常

See #checkNotNull(boolean, Class, String, Object...) for details.

返回:

抛出:

X

X extends java.lang.Throwable