Throws Exception.
Catch (Exception e).
Throws RuntimeException.
Catch (TestException e).
No code is necessary.
第1题:
A.public class MinMax<?> {
B.public class MinMax<? extends Number> {
C.public class MinMax<N extends Object> {
D.public class MinMax<N extends Number> {
E.public class MinMax<? extends Object> {
F.public class MinMax<N extends Integer> {
第2题:
下列哪个类声明是正确的? ( )
A.abstract class G2 extends superClass1, superClass2 {…}
B.abstract public class classmates{…}
C.public final class NewClass extends superClass implemnets Interfacel{…}
D.public abstract class String{…}
第3题:
下列哪个类声明是正确的?
A.abstract class G2 extends superClassl,superClass2{……}
B.abstract public class classmates{……}
C.public final class NewClass extends superClass implements Interfacel{……}
D.public abstract class String{……}
第4题:
Which three demonstrate an “is a” relationship?()
第5题:
Class TestException 1. public class TestException extends Exception { 2. } Class a: 1. public class a { 2. 3. public String sayHello(String name) throws TestException { 4. 5. if(name == null) { 6. throw new TestException(); 7. } 8. 9. return “Hello “+ name; 10. } 11. 12. } A programmer wants to use this code in an application: 45. A a=new A(); 46. System.out.println(a.sayHello(”John”)); Which two are true?()
第6题:
下列哪个类声明是正确的? ( )
A.abstract class G2 extends superClass1,superClass2{...}
B.abstract public class classmates{...}
C.public final class NewClass extends superClass implemnets Interface1{...}
D.public abstract class String{...}
第7题:
In which two cases does the compiler supply a default constructor for class A?()
第8题:
A.class x { .... }
B.public x extends y { .... }
C.public class x extends y { .... }
D.class x extends y implements y1 { .... }
第9题:
1. public class a { 2. public void method1() { 3. try { 4. B b=new b(); 5. b.method2(); 6. // more code here 7. } catch (TestException te) { 8. throw new RuntimeException(te); 9. } 10. } 11. } 1. public class b { 2. public void method2() throws TestException { 3. // more code here 4. } 5. } 1. public class TestException extends Exception { 2. } Given: 31. public void method() { 32. A a=new a(); 33. a.method1(); 34. } Which is true if a TestException is thrown on line 3 of class b?()
第10题:
interface Data { public void load(); } abstract class Info { public abstract void load(); } Which class correctly uses the Data interface and Info class?()