@TestvoidwhenUsingUtilityMethods_thenAccessMethodsViaClassName(){assertEquals(MyUtilityClass.returnUpperCase("iniubong"),"INIUBONG");assertEquals(MyUtilityClass.returnLowerCase("AcCrA"),"accra");} 上述示例中,工具类中的returnUpperCase()和returnLowerCase()方法只能通过类名来访问。 4. Java辅助类 vs. 工...
void whenUsingUtilityMethods_thenAccessMethodsViaClassName(){ assertEquals(MyUtilityClass.returnUpperCase("iniubong"), "INIUBONG"); assertEquals(MyUtilityClass.returnLowerCase("AcCrA"), "accra"); } 1. 2. 3. 4. 5. 上述示例中,工具类中的returnUpperCase()和returnLowerCase()方法只能通过类名来访问。
WildcardErrorBad.java:7: error: method set in interface List<E> cannot be applied to given types; l1.set(0, l2.get(0)); // expected a CAP#1 extends Number, ^ required: int,CAP#1 found: int,Number reason: actual argument Number cannot be converted to CAP#1 by method invocation conv...
packagecom.yzu.zhang.utils;importjava.io.File;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.Reader;/*** Convenience methods for executing non-Java processes.*@sinceostermillerutils 1.06.00*/publicfinalclassExecHelper {/*** Executes the specified command and arguments in a ...
Java: when to use static methods 上面讨论总结一下可以归纳为两点: 1. 逻辑上不和某个类实例绑定,如Singleton中的GetInstance() 2. 方法比较轻量,不涉及类变量,最好是一个“纯函数”,调用之后没有副作用 其中第一点是最值得注意之处。 下面两个例子可以使用static方法: ...
Methods inherited from class java.lang.Object getClass, notify, notifyAll, wait, wait, waitMethod Detail values public static ClassLoaderHelper[] values() Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the...
java.lang.Object com.tangosol.util.QueryHelper public final class QueryHelper extends ObjectQueryHelper is a utility class that provides a set of factory methods used for building instances of Filter or ValueExtractor. The QueryHelper API accepts a String that specifies the creation of rich Filters...
WorkspaceHelper(java.lang.Object obj) Deprecated. As of ArcGIS 9.2, replaced by normal Java casts. WorkspaceHelper theWorkspaceHelper = (WorkspaceHelper) obj; Method Summary All MethodsStatic MethodsInstance MethodsConcrete Methods Modifier and TypeMethod and Description boolean equals(java.lang.Object...
public void removeAll() throws java.io.IOException, AutomationException All previously installed geotransformation methods are removed from the system. Specified by: removeAll in interface IGeoTransformationHelper Throws: java.io.IOException - If there are interop problems. AutomationException - If the Arc...
range.Insert(Excel.XlDirection.xlDown) i += 1 End While n += 1 End While Catch e As Exception Me.KillExcelProcess() Throw e End Try End Sub ''' ''' 插行(在指定WorkSheet指定行上面插入指定数量行) ''' ''' ''' '''