1. public class Exception Test {  2. class TestException extends Exception {}  3. public void runTest() throws TestException {}  4. public void test() /* Point X */ {  5. runTest();  6. }  7. }  At Point X on line 4, which code is necessary to make the code compile?()  A、 No code is necessary.B、 throws ExceptionC、 catch ( Exception e )D、 throws RuntimeExceptionE、 catch ( TestException e)

1. public class Exception Test {  2. class TestException extends Exception {}  3. public void runTest() throws TestException {}  4. public void test() /* Point X */ {  5. runTest();  6. }  7. }  At Point X on line 4, which code is necessary to make the code compile?()  

  • A、 No code is necessary.
  • B、 throws Exception
  • C、 catch ( Exception e )
  • D、 throws RuntimeException
  • E、 catch ( TestException e)

相关考题:

1. public class SimpleCalc {  2. public int value;  3. public void calculate() { value += 7; }  4. } And:  1. public class MultiCalc extends SimpleCalc {  2. public void calculate() { value -= 3; }  3. public void calculate(int multiplier) {  4. calculate();  5. super.calculate();  6. value *=multiplier;  7. }  8. public static void main(String[] args) {  9. MultiCalc calculator = new MultiCalc();  10. calculator.calculate(2);  11. System.out.println(”Value is: “+ calculator.value);  12. }  13. }  What is the result?() A、 Value is: 8B、 Compilation fails.C、 Value is: 12D、 Value is: -12E、 The code runs with no output.F、 An exception is thrown at runtime.

1. public interface A {  2. public void doSomething(String thing);  3. }  1. public class AImpl implements A {  2. public void doSomething(String msg) { }  3. }  1. public class B {  2. public A doit() {  3. // more code here  4. }  5.  6. public String execute() { 7. // more code here  8. }  9. }  1. public class C extends B {  2. public AImpl doit() {  3. // more code here  4. }  5.  6. public Object execute() {  7. // more code here  8. }  9. }  Which statement is true about the classes and interfaces in the exhibit?() A、 Compilation will succeed for all classes and interfaces.B、 Compilation of class C will fail because of an error in line 2.C、 Compilation of class C will fail because of an error in line 6.D、 Compilation of class AImpl will fail because of an error in line 2.

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?()A、 Class a will not compile.B、 Line 46 can throw the unchecked exception TestException.C、 Line 45 can throw the unchecked exception TestException.D、 Line 46 will compile if the enclosing method throws a TestException.E、 Line 46 will compile if enclosed in a try block, where TestException is caught.

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?()A、 Line 33 must be called within a try block.B、 The exception thrown by method1 in class a is not required to be caught.C、 The method declared on line 31 must be declared to throw a RuntimeException.D、 On line 5 of class a, the call to method2 of class b does not need to be placed in a try/catch block.

1. public class A {  2. public void doit() {  3. }  4. public String doit() {  5. return “a”;  6. }  7. public double doit(int x) {  8. return 1.0;  9. }  10.}  What is the result?() A、 An exception is thrown at runtime.B、 Compilation fails because of an error in line 7.C、 Compilation fails because of an error in line 4.D、 Compilation succeeds and no runtime errors with class A occur.

1. public class Test {   2. public static void main (String args) {   3. unsigned byte b = 0;   4. b--;   5.   6. }   7. }   What is the value of b at line 5?()  A、 -1B、 255C、 127D、 Compilation will fail.E、 Compilation will succeed but the program will throw an exception at line 4.

1. public class A {  2. void A() {  3. System.out.println(“Class A”);  4. }  5. public static void main(String[] args) {  6. new A();  7. }  8. }  What is the result?()  A、 Class AB、 Compilation fails.C、 An exception is thrown at line 2.D、 An exception is thrown at line 6.E、 The code executes with no output.

1. public class A {  2. public void method1() {  3. B b=new B();  4. b.method2();  5. // more code here  6. }  7. }  1. public class B {  2. public void method2() {  3.C c=new C();  4. c.method3();  5. // more code here  6. }  7. }  1. public class C {  2. public void method3() {  3. // more code here  4. }  5. }  Given:  25. try {  26. A a=new A();  27. a.method1();  28. } catch (Exception e) {  29. System.out.print(”an error occurred”);  30. }  Which two are true if a NullPointerException is thrown on line 3 of class C?()A、 The application will crash.B、 The code on line 29 will be executed.C、 The code on line 5 of class A will execute.D、 The code on line 5 of class B will execute.E、 The exception will be propagated back to line 27.

public class ExceptionTest {   class TestException extends Exception {}   public void runTest () throws TestException {}   public void test () /* Point X*/ {   runTest ();   }   }   At point X on line 4, which code can be added to make the code compile?()  A、 Throws Exception.B、 Catch (Exception e).C、 Throws RuntimeException.D、 Catch (TestException e).E、 No code is necessary.

1. class A {  2. public String toString ()  {  3. return “4”;  4. }  5. }  6. class B extends A {  7. public String toString ()   {  8. return super.toString()  + “3”;  9. }  10. }  11. public class Test {  12.   public static void main(String[]args)  {  13.      System.out.printIn(new B());  14.      }  15. }    What is the result?()  A、 Compilation succeeds and 4 is printed.B、 Compilation succeeds and 43 is printed.C、 An error on line 9 causes compilation to fail.D、 An error on line 14 causes compilation to fail.E、 Compilation succeeds but an exception is thrown at line 9.

ClassOne.java: 1. package com.abe.pkg1; 2. public class ClassOne { 3. private char var = ‘a’; 4. char getVar() { return var; } 5. } ClassTest.java: 1. package com.abe.pkg2; 2. import com.abc.pkg1.ClassOne; 3. public class ClassTest extends ClassOne { 4. public static void main(String[] args) { 5. char a = new ClassOne().getVar();6. char b = new ClassTest().getVar(); 7. } 8. } What is the result?()A、 Compilation fails.B、 Compilation succeeds and no exceptions are thrown.C、 An exception is thrown at line 5 in ClassTest.java.D、 An exception is thrown at line 6 in ClassTest.java.

1. class super {  2. public float getNum() {return 3.0f;}  3. }  4.    5. public class Sub extends Super { 6.   7. }   Which method, placed at line 6, will cause a compiler error?()  A、  Public float getNum()   {return 4.0f; }B、  Public void getNum ()  { }C、  Public void getNum (double d)   { }D、  Public double getNum (float d) {retrun 4.0f; }

1. public class Test {  2. int x= 12;  3. public void method(int x) {  4. x+=x;  5. System.out.println(x);  6. }  7. }  Given:  34. Test t = new Test();  35. t.method(5);  What is the output from line 5 of the Test class?() A、 5B、 10C、 12D、 17E、 24

1. class A {  3. public String to String() {  4. return “4”;  5. }  6. }  7. class B extends A {  8. public String toString() { 9. return super.toString() + “3”;  10. }  11. }  12. public class Test {  13. public static void main (String[] args) {  14. System.out.printIn(new B()); 15. }  16. }   What is the result( )?   A、 Compilation succeeds and 4 is printed.B、 Compilation …………… is printed.C、 An error on line 9 cause compilation to fail.D、 An error on line 14 cause compilation to fail.E、 Compilation succeeds but an exception is thrown at line 9.

public class TestA{   public void methodA()  throws IOException{   //……   }   }   public class TestB extends TestA{   public void methodA()  throws EOFException{   //……   }   }   public class TestC extends TestA{   public void methodA()  throws Exception{   //……   }   }   当编译类TestC的时候,结果是哪项?() A、 正常B、 编译错误C、 运行错误D、 以上都不对

1. interface TestA { String toString(); }  2. public class Test {  3. public static void main(String[] args) {  4. System.out.println(new TestA() {  5. public String toString() { return “test”; }  6. }  7. }  8. }  What is the result?() A、 testB、 nullC、 An exception is thrown at runtime.D、 Compilation fails because of an error in line 1.E、 Compilation fails because of an error in line 4.F、 Compilation fails because of an error in line 5.

1. class Exc0 extends Exception { }  2. class Exc1 extends Exc0 { }  3. public class Test {  4. public static void main(String args[]) {  5. try {  6. throw new Exc1();  7. } catch (Exc0 e0) {  8. System.out.println(“Ex0 caught”);  9. } catch (Exception e) {  10. System.out.println(“exception caught”);  11. }  12. }  13. }  What is the result?()  A、 Ex0 caughtB、 exception caughtC、 Compilation fails because of an error at line 2.D、 Compilation fails because of an error at line 6.

单选题1. public class Test {   2. public static void main (String args) {   3. unsigned byte b = 0;   4. b--;   5.   6. }   7. }   What is the value of b at line 5?()A -1B 255C 127D Compilation will fail.E Compilation will succeed but the program will throw an exception at line 4.

单选题1. public class Exception Test {  2. class TestException extends Exception {}  3. public void runTest() throws TestException {}  4. public void test() /* Point X */ {  5. runTest();  6. }  7. }  At Point X on line 4, which code is necessary to make the code compile?()A No code is necessary.B throws ExceptionC catch ( Exception e )D throws RuntimeExceptionE catch ( TestException e)

单选题1. public class Test {  2. int x= 12;  3. public void method(int x) {  4. x+=x;  5. System.out.println(x);  6. }  7. }  Given:  34. Test t = new Test();  35. t.method(5);  What is the output from line 5 of the Test class?()A 5B 10C 12D 17E 24

单选题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?()A Line 33 must be called within a try block.B The exception thrown by method1 in class a is not required to be caught.C The method declared on line 31 must be declared to throw a RuntimeException.D On line 5 of class a, the call to method2 of class b does not need to be placed in a try/catch block.

单选题1. class Super {  2. public float getNum() { return 3.0f; }  3. }  4.   5. public class Sub extends Super {  6.   7. }  Which method, placed at line6, causes compilation to fail?()A public void getNum(){}B public void getNum(double d){}C public float getNum() { return 4.0f; }D public double getNum(float d) { return 4.0d; }

单选题1. class Exc0 extends Exception { }  2. class Exc1 extends Exc0 { }  3. public class Test {  4. public static void main(String args[]) {  5. try {  6. throw new Exc1();  7. } catch (Exc0 e0) {  8. System.out.println(“Ex0 caught”);  9. } catch (Exception e) {  10. System.out.println(“exception caught”);  11. }  12. }  13. }  What is the result?()A Ex0 caughtB exception caughtC Compilation fails because of an error at line 2.D Compilation fails because of an error at line 6.

单选题public class ExceptionTest {  class TestException extends Exception {}  public void runTest () throws TestException {}  public void test () /* Point X*/  {  runTest ();  }  }   At point X on line 4, which code can be added to make the code compile?()A Throws Exception.B Catch (Exception e).C Throws RuntimeException.D Catch (TestException e).E No code is necessary.

单选题1. public class A {  2. public void doit() {  3. }  4. public String doit() {  5. return “a”;  6. }  7. public double doit(int x) {  8. return 1.0;  9. }  10.}  What is the result?()A An exception is thrown at runtime.B Compilation fails because of an error in line 7.C Compilation fails because of an error in line 4.D Compilation succeeds and no runtime errors with class A occur.

单选题1. public class A {  2. void A() {  3. System.out.println(“Class A”);  4. }  5. public static void main(String[] args) {  6. new A();  7. }  8. }  What is the result?()A Class AB Compilation fails.C An exception is thrown at line 2.D An exception is thrown at line 6.E The code executes with no output.

多选题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?()AClass a will not compile.BLine 46 can throw the unchecked exception TestException.CLine 45 can throw the unchecked exception TestException.DLine 46 will compile if the enclosing method throws a TestException.ELine 46 will compile if enclosed in a try block, where TestException is caught.