if-condition我的代码中有这个:
if (a||a&&!b){
// do some stuff
}
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从我的那些初始值junit test:
boolean a=true, b = true;
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我后来认识到这个陈述可以简化为:
if (a&&b)
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变绿了: Assert.assertTrue(a||a&&!b == a&&b);
我现在的问题.有没有方法,工具,功能,图书馆等来检查boolean expression是否有简化?
谢谢你的帮助?
我的spring托管tomcat应用程序遇到了一些麻烦.有一个UserDao负责一些用户数据库操作.如果我启动tomcat,我收到此消息:
Thread [pool-2-thread-1] (Class load: UserDao)
Class<T>.getDeclaredConstructors0(boolean) line: not available [native method]
Class<T>.privateGetDeclaredConstructors(boolean) line: not available
Class<T>.getDeclaredConstructors() line: not available
AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(Class<?>, String) line: 229
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).determineConstructorsFromBeanPostProcessors(Class, String) line: 962
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBeanInstance(String, RootBeanDefinition, Object[]) line: 935
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String, RootBeanDefinition, Object[]) line: 485
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String, RootBeanDefinition, Object[]) line: 456
AbstractBeanFactory$1.getObject() line: 294
DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String, ObjectFactory) line: 225
DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String, Class<T>, Object[], boolean) line: 291
DefaultListableBeanFactory(AbstractBeanFactory).getBean(String) line: 193
DefaultListableBeanFactory.preInstantiateSingletons() line: 605
XmlWebApplicationContext(AbstractApplicationContext).finishBeanFactoryInitialization(ConfigurableListableBeanFactory) line: 925
XmlWebApplicationContext(AbstractApplicationContext).refresh() line: 472
ContextLoaderListener(ContextLoader).configureAndRefreshWebApplicationContext(ConfigurableWebApplicationContext, ServletContext) line: 383
ContextLoaderListener(ContextLoader).initWebApplicationContext(ServletContext) line: 283
ContextLoaderListener.contextInitialized(ServletContextEvent) line: 111
StandardContext.listenerStart() line: …Run Code Online (Sandbox Code Playgroud) 当我按 'Return' 键时EditText,它会通过变大来创建新行。EditText按下“返回”键时如何失去焦点?换句话说,如何在按下“返回”时让键盘消失?
我有这个接口方法Animal interface:
<T extends Animal> boolean isEqual(T pAnimal);
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现在我遇到了实施问题.我有两个类Dog和Cat.两个班extends来自Animal.我想覆盖该方法,但具体实现:
@Override
public boolean isEqual(Dog pDog) {
// do some stuff.
return true;
}
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这导致编译错误
must override or implement a supertype method
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我如何定义接口,以便不必typecast在我的具体实现类中创建?
提前致谢
斯特凡
我在Eclipse IDE中遇到了重构问题.
我有这个接口方法:
List<String> evaluateAllPoi(boolean pIsVerified, List<String> pAllNames, List<String> pAllComment);
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该方法对Junit具有较高的测试覆盖率(至少90次测试).
我想boolean通过重构将第一个参数移动到方法签名的末尾,所以我得到:
List<String> evaluateAllPoi(List<String> pAllNames, List<String> pAllComment,boolean pIsVerified);
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我很确定Eclipse提供了一种轻松实现这一目标的可能性,而无需手动更改每个调用,但目前我没有找到/看到它.
你能给我一个暗示吗?
我Expectations在测试用例中编写的块有问题:
new Expectations() {
{
mFindHandlerMock.findAll((Model) any, (Set<Id>) any, false);
if (!pWithRealData) {
result = Collections.emptySet();
} else {
result = pAllData;
}
times = 1;
Deencapsulation.invoke(mDb, "readSqlQuery", withAny(String.class));
result = "select * from realdata";
times = 1;
}
};
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测试用例崩溃:
java.lang.IllegalArgumentException: Invalid conditional statement inside expectation block
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正好在这里:
if (!pWithRealData) {
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它只是一个简单的boolean就是false在这种情况下.
我绝对不知道为什么exception会发生这种情况.我已经用谷歌搜索过但没有找到任何帮助.
你可以帮帮我吗?
希望你能帮助我...我有两个项目common-lib和common-dao.每个项目都有自己的spring配置文件.
如果我运行以下测试类,则自动装配工作正常,所有属性都由spring生成.
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"/cmn-dao-spring.xml"})
public class ScoreDaoTest extends TestCase {
@Autowired
private ScoreDao mScoreDao;
@Autowired
private ScoreCreator mScoreCreator;
@Autowired
private QuestionCreator mQuestionCreator;
@Override
protected void setUp() throws Exception {
super.setUp();
}
@Test
public void testLoadAllScore() throws Exception {
List<Score> lAllScore = mScoreDao.loadAllScore(0, 0);
Assert.assertTrue(lAllScore.isEmpty());
}
@Test
public void testSaveScore() throws Exception {
Question question = mQuestionCreator.createQuestion(49954854L, new Date(), "Wer bist Du?", "Jörg", "Anja", "Stefan", "Willi", 3, true, false, 1, "DE", "DE_QZ");
Assert.assertNotNull(question);
mScoreDao.saveScore(mScoreCreator.createScore(-1L, null, "Stefan", 1033, 27, "Wuhuuuu", question));
List<Score> …Run Code Online (Sandbox Code Playgroud) 我需要你的帮助以下sql:
SELECT
substr(nd.nne_def,4,3) as bzn
FROM
core_def.nne_def nd
group by substr(nd.nne_def,4,4);
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我收到了错误:
ORA-00932: 00932. 00000 - "inconsistent datatypes: expected - got CLOB"
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我需要sql只是为了分析而不是生产代码.
如何通过属于CLOB的子字符串进行分组?
谢谢你的帮助.
斯特凡
java ×6
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