class MyException extends Exception { public String toString() { return "negative number "; } } public class ExceptionDemo { public static void mySqrt(int a) throws MyException { if (a < 0) throw new MyException(); System.out.println(Math.sqrt(a)); } public static void main(String args...
54. class MyException extends Exception { } and the following four fragments: Ⅰ. protected void finalize() throws Throwable { Ⅱ. protected void finalize() { Ⅲ. protected void finalize() throws MyException { Ⅳ. void finalize() { If the fragments are inserted, independently, at li...
22. class MyException extends Exception { } When line 20 is reached, how many objects are eligible for garbage collection A.2 B.4 C.5 D.6 E.7 F.8 多项选择题 Given the following from the java.io.File API: Field Summary: static String separator ...
throw new IOException(“Cannot find the directory”); throw new MyException(); //自定义的异常类 void exam(int mark) throws OutofMarkException { 异常抛出 } //该方法抛出异常不处理 1. 2. 3. 多线程设计 线程就是应用程序中的一个可执行线索;多线程就是同一个应用程序中有多个可执行线索,它们可以...
C) catch ( IOException e ) D) System.out.printin ( e ) 点击查看答案 第2题 Whatiswrongwiththefollowingcode?()classMyExceptionextendsException{}publicclassQb4ab{publicvoidfoo(){try{bar();}finally{baz();}catch(MyExceptione){}}publicvoidbar()throwsMyException{thrownewMyException();}publicvoid...
类Parent、Child 定义如下:1.public class Parent2.{ public float aFun(float a, float b) throws3.IOException {}4.}5.public class Child extends Parent{6.7.}将以下哪种方法插入行 6 是不合法的。()A.float aFun(float a, float b){ } B.public int aFun(int a, int b)throws Exception{ }...
22. class MyException extends Exception { } When line 20 is reached, how many objects are eligible for garbage collection A.2B.4C.5D.6E.7F.8 点击查看答案手机看题 多项选择题 Given the following from the java.io.File API: Field Summary: static String separator Method Summary: static...
22. class MyException extends Exception { } When line 20 is reached, how many objects are eligible for garbage collection A.2B.4C.5D.6E.7F.8 点击查看答案手机看题 多项选择题 Given the following from the java.io.File API: Field Summary: static String separator Method Summary: static...