void b( ){System.out.println("B"); } } public class Inherit extends Base{ static void a( ){System.out.println("C"); } void b( ){System.out.println("D"); } public static void main(String args[]){ Base b=new Base(); Base c=new Inherit(); b.a(); b.b(); c.a(); c...
classInheritInnerextendsWithInner.Inner { // InheritInner() 是不能通过编译的,一定要加上形参 InheritInner(WithInner wi) { wi.super();//必须有这句调用 } publicstaticvoidmain(String[] args) { WithInner wi =newWithInner(); InheritInner obj =newInheritInner(wi); } } 参考资料: 《java编程思...
否则会出现以下编译错误信息:No enclosing instance of//type WithInner is available due to some intermediate constructor invocationInheritClass(outerClass outer){outer.super();}publicstaticvoidmain(){outerClass outer=newouterClass();InheritClass inherit=newInherit...
classSimpleExceptionextendsException{}publicclassInheritingExceptions{publicvoidf()throws SimpleException{System.out.println("Throw SimpleException from f()");thrownewSimpleException();}publicstaticvoidmain(String[]args){InheritingExceptions sed=newInheritingExceptions();try{sed.f();}catch(SimpleException ...
```java public class Main { 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public static void main(String[] args) { // 实例化 DemoThread 得到新创建的线程实例 DemoThread thread = new DemoThread(); // 给创建的子线程命名 thread.setName("DemoThread 子线程"); // 启动线程 thread.start...
static class DefaultThreadFactory implements ThreadFactory { public Thread newThread(Runnable r) { Thread t = new Thread(); return t; } } } 总是,一切的开始,都要调用 Thread 类的构造方法。 而这个构造方法,最终都会调用 Thread 类的 init () 方法。
public class InheritableThreadLocalTest { private static ThreadLocal<String> tl = new ThreadLocal<>(); public static void main(String[] args) { tl.set("main thread value."); // 开启一个子线程 new Thread(() -> { System.out.println("从父线程获取的值:" + tl.get()); }).start();...
public class TestAn { public static void main(String[] args) throws NoSuchFieldException, NoSuchMethodException { //获取Person class 实例 Class<Person> c1 = Person.class; //反射获取 类上的注解 MyAnnotation classAnnotation = c1.getAnnotation(MyAnnotation.class); System.out.println(clas...
staticRuntime.Versionversion() Returns the version of the Java Runtime Environment as aRuntime.Version. Methods declared in class java.lang.Object clone,equals,finalize,getClass,hashCode,notify,notifyAll,toString,wait,wait,wait Method Detail
driver. Specify one of the following static variables in the GX_DA_DAD_DRIVERS class: GX_DA_DRIVER_ODBC GX_DA_DRIVER_SYBASE_CTLIB GX_DA_DRIVER_MICROSOFT_JET GX_DA_DRIVER_MICROSOFT_SQL GX_DA_DRIVER_INFORMIX_SQLNET GX_DA_DRIVER_INFORMIX_CLI GX_DA_DRIVER_INFORMIX_CORBA GX_DA_DRIVER_...