网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
多选题
Given: 1. public class Method Over { 2. public void set Var (int a, int b, float c) { 3. } 4. } Which two overload the set Var method()?
A
private void set Var(int a, float c, int b) {}
B
protected void set Var(int a, int b, float c) {}
C
public int set Var(int a, float c, int b) {return a:}
D
public int set Var(int a, int b, float c) {return a:}
E
protected float set Var(int a, int b, float c) {return c:}
参考答案
参考解析
解析:
暂无解析
更多 “多选题Given: 1. public class Method Over { 2. public void set Var (int a, int b, float c) { 3. } 4. } Which two overload the set Var method()?Aprivate void set Var(int a, float c, int b) {}Bprotected void set Var(int a, int b, float c) {}Cpublic int set Var(int a, float c, int b) {return a:}Dpublic int set Var(int a, int b, float c) {return a:}Eprotected float set Var(int a, int b, float c) {return c:}” 相关考题
考题
阅读下列代码段,选出该代码段的正确文件名( )。 class A { void method1() { System.out.println("method1 in class A"); } } public class B { void method2() { System.out.println("method2 in class B"); } public static void main(String args[]) { System.out.println("main in class B"); } }A.A.javaB.A.classC.B.classD.B.java
考题
下面程序的输出结果是什么? class C1{ static int j=0; public void method(int a){ j++; } } class Test extends C1{ public int method(){ return j++; } public void result(){ method(j); System.out.println(j+method()); } public static void main(String args[]){ new TeA.0B.1C.2D.3
考题
Given:10. interface Data { public void load(); }11. abstract class Info { public abstract void load(); }Which class correctly uses the Data interface and Info class?()()
A.B.C.D.E.F.
考题
阅读下列代码段,选出该代码段的正确的文件名( )。 class A { void method () { System.out.println ("methodl in class A"); } } public class B { void method2 () { System.out.println("method2 in class B"); } public static void main (String args[]) { System.out.println ("main () in class B"); } }A.A.javaB.A.classC.B.classD.B.java
考题
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.
考题
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.
考题
Which lines of code are valid declarations of a native method when occurring within the declaration of the following class?() public class Qf575 { // insert declaration of a native method here } A、native public void setTemperature(int kelvin);B、private native void setTemperature(int kelvin);C、protected int native getTemperature();D、public abstract native void setTemperature(int kelvin);E、native int setTemperature(int kelvin) {}
考题
class super { public float getNum() {return 3.0f;} } public class Sub extends Super { } 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; }
考题
Given classes defined in two different files: 1. package util; 2. public class BitUtils { 3. private static void process(byte[] b) { } 4. } 1. package app; 2. public class SomeApp { 3. public static void main(String[] args) { 4. byte[] bytes = new byte[256]; 5. // insert code here 6. } 7. } What is required at line 5 in class SomeApp to use the process method of BitUtils?() A、 process(bytes);B、 BitUtils.process(bytes);C、 app.BitUtils.process(bytes);D、 util.BitUtils.process(bytes);E、 import util.BitUtils. *; process(bytes);F、 SomeApp cannot use the process method in BitUtils.
考题
interface Data { public void load(); } abstract class Info { public abstract void load(); } Which class correctly uses the Data interface and Info class?() A、 public class Employee extends Info implements Data { public void load() { /*do something*/ } }B、 public class Employee implements Info extends Data { public void load() { /*do something*/ } }C、 public class Employee extends Info implements Data { public void load() { /*do something */ } public void Info.load() { /*do something*/ } }D、 public class Employee implements Info extends Data { public void Data.load() { /*dsomething */ } public void load() { /*do something */ } }E、 public class Employee implements Info extends Data { public void load() { /*do something */ } public void Info.load(){ /*do something*/ } }F、 public class Employee extends Info implements Data{ public void Data.load() { /*do something*/ } public void Info.load() { /*do something*/ } }
考题
Given: 1. public class Method Over { 2. public void set Var (int a, int b, float c) { 3. } 4. } Which two overload the set Var method()?A、 private void set Var(int a, float c, int b) {}B、 protected void set Var(int a, int b, float c) {}C、 public int set Var(int a, float c, int b) {return a:}D、 public int set Var(int a, int b, float c) {return a:}E、 protected float set Var(int a, int b, float c) {return c:}
考题
Which method must be defined by a class implementing the java.lang.Runnable interface? () A、 void run()B、 public void run()C、 public void start()D、 void run(int priority)E、 public void run(int priority)F、 public void start(int priority)
考题
Given: 1. public class ConstOver { 2. public constOver(int x, int y, int z) { 3. } 4. } Which two overload the ConstOver Constructor?()A、 ConstOver() {}B、 protected int ConstOver(){}C、 private ConstOver(int z, int y, byte x ) {}D、 public Object ConstOver(Int x, int y, int z) {}E、 pubic void ConstOver (byte x, byte y, byte z) {}
考题
1. class super { 2. public float getNum() {return 3.0f;} 3. } 4. 5. public class Sub extends Super { 6. 7. } Which method, placed at 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; }
考题
Given an ActionEvent, which method allows you to identify the affected Component?() A、 Public class getClass()B、 Public Object getSource()C、 Public Component getSource()D、 Public Component getTarget()E、 Public Component getComponent()F、 Public Component getTargetComponent()
考题
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
考题
单选题Which method must be defined by a class implementing the java.lang.Runnable interface? ()A
void run()B
public void run()C
public void start()D
void run(int priority)E
public void run(int priority)F
public void start(int priority)
考题
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
考题
单选题interface Data { public void load(); } abstract class Info { public abstract void load(); } Which class correctly uses the Data interface and Info class?()A
public class Employee extends Info implements Data { public void load() { /*do something*/ } }B
public class Employee implements Info extends Data { public void load() { /*do something*/ } }C
public class Employee extends Info implements Data { public void load() { /*do something */ } public void Info.load() { /*do something*/ } }D
public class Employee implements Info extends Data { public void Data.load() { /*dsomething */ } public void load() { /*do something */ } }E
public class Employee implements Info extends Data { public void load() { /*do something */ } public void Info.load(){ /*do something*/ } }F
public class Employee extends Info implements Data{ public void Data.load() { /*do something*/ } public void Info.load() { /*do something*/ } }
考题
单选题Given classes defined in two different files: 1. package util; 2. public class BitUtils { 3. public static void process(byte[]) { /* more code here */ } 4. } 1. package app; 2. public class SomeApp { 3. public static void main(String[] args) { 4. byte[] bytes = new byte[256]; 5. // insert code here 6. } 7. } What is required at line 5 in class SomeApp to use the process method of BitUtils?()A
process(bytes);B
BitUtils.process(bytes);C
util.BitUtils.process(bytes);D
SomeApp cannot use methods in BitUtils.E
import util.BitUtils.*; process(bytes);
考题
单选题Given classes defined in two different files: 1. package util; 2. public class BitUtils { 3. private static void process(byte[] b) { } 4. } 1. package app; 2. public class SomeApp { 3. public static void main(String[] args) { 4. byte[] bytes = new byte[256]; 5. // insert code here 6. } 7. } What is required at line 5 in class SomeApp to use the process method of BitUtils?()A
process(bytes);B
BitUtils.process(bytes);C
app.BitUtils.process(bytes);D
util.BitUtils.process(bytes);E
import util.BitUtils. *; process(bytes);F
SomeApp cannot use the process method in BitUtils.
考题
填空题Given the following code, write a line of code that, when inserted at the indicated location, will make the overriding method in Extension invoke the overridden method in class Base on the current object. class Base { public void print( ) { System.out.println("base"); } } class Extention extends Base { public void print( ) { System.out.println("extension"); // insert line of implementation here } } public class Q294d { public static void main(String args[]) { Extention ext = new Extention( ); ext.print( ); } } Fill in a single line of implementation.()
考题
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 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; }
考题
单选题class super { public float getNum() {return 3.0f;} } public class Sub extends Super { } 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; }
考题
单选题现有: 1. interface Animal { 2. void eat(); 3. } 4. 5. // insert code here 6. 7. public class HouseCat extends Feline { 8. public void eat() { } 9. } 和五个声明: abstract class Feline implements Animal { } abstract class Feline implements Animal { void eat(); } abstract class Feline implements Animal { public void eat(); } abstract class Feline implements Animal { public void eat() { } } abstract class Feline implements Animal { abstract public void eat(); } 分别插入到第5行,有几个可以通过编译?()A
0B
1C
2D
3
考题
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.
考题
多选题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?()AThe application will crash.BThe code on line 29 will be executed.CThe code on line 5 of class A will execute.DThe code on line 5 of class B will execute.EThe exception will be propagated back to line 27.
热门标签
最新试卷