public class ClassA {  public int getValue() {  int value=0;  boolean setting = true;  String title=”Hello”;  (value || (setting  title == “Hello”)) { return 1; }  (value == 1  title.equals(”Hello”)) { return 2; }  }  } And:  ClassA a = new ClassA();  a.getValue();  What is the result?() A、 1B、 2C、 Compilation fails.D、 The code runs with no output.E、 An exception is thrown at runtime.

public class ClassA {  public int getValue() {  int value=0;  boolean setting = true;  String title=”Hello”;  (value || (setting && title == “Hello”)) { return 1; }  (value == 1 & title.equals(”Hello”)) { return 2; }  }  } And:  ClassA a = new ClassA();  a.getValue();  What is the result?() 

  • A、 1
  • B、 2
  • C、 Compilation fails.
  • D、 The code runs with no output.
  • E、 An exception is thrown at runtime.

相关考题:

( 28 ) 有如下程序#includeusing namespace std;int i=1;class Fun{public:static int i;int value( ){ return i-1;}int value( )const{ return i+1;}};int Fun::i=2;int main( ){int i=3;Fun fun1;const Fun fun2;____________return 0;}若程序的输出结果是 :123则程序中下划线处遗漏的语句是A ) coutFun::iB ) coutFun::ifun1.value()C ) coutFun::i;D ) cout

有如下程序 include using namespace std; int i=1; class Fun { 有如下程序 #include <iostream> using namespace std; int i=1; class Fun { public: static int i; int value( ){ return i-l;} int value( )const { return i+1;} }; int Fun::i=2; int main( ){ int i=3; Fun funl; const Fun fun2; ___________ return 0; } 若程序的输出结果是: 123 则程序中下划线处遗漏的语句是A.cout<<funl.value( )<<Fun::i<<fun2.value( );B.cout<<Fun::i<<funl.value()<<fun2.value( );C.cout<<funl.value( )<<fun2.value( )<<Fun::i;D.cout<<fun2.value( )<<Fun::i<<fun1.value( );

有如下类定义: ClaSS MyClass{ int value; public: MyClass(int n):value(n){ } int getValue( )const{return value;} l; 则类MyClass的构造函数的个数是A.1个B.2个C.3个D.4个

通过实现Rmmable接口创建线程,请在下面横线处填写代码完成此程序。public class ThreadTest{public static void main(String args []){Thread testObj1 = new Thread (new Hello ());Thread testObj2 = new Thread (new Hello ());testObj 2.start ( );}}class Hello implements Runnable{int j;public void run(){System.out.println("Hello" + j ++);}}

请阅读下面程序 public class ThreadTest{ public static void main(String args[]) ( Thread t1=new Thread(new Hello()); Thread t2=new Thread(new Hello()); t1.start(); t2.start(); } } class Hello implements Runnable { int i; public void run() { while(true) { System.out.prinfin("Hello"+i++); if(i=5) break; } } } 该程序创建线程使用的方法是A.继承Thread类B.实现Runnable接口C.t1.start()D.t2.start()

有如下程序 include using namespace std;int i=1;class Fun {public:static int i;i 有如下程序 #include <iostream>using namespace std;int i=1;class Fun {public:static int i;int value(){ return i-1;}int value()const{ return i+1;}};int Fun:: i=2;int main() {int i=3;Fun fun1;const Fun fun2;______________________return ();}若程序的输出结果是:123A.cout<<fun1.value()<<Fun:: i<<fun2.value();B.cout<<Fun::i<<fun1.value()<<fun2.value();C.cout<<fun1. value()<<fun2.value()<<Fun:: i;D.cout<<fun2.value()<<Fun:: i<<fun 1.value();

public class ClassA{public int getValue(){int value=0;boolean setting=true;String title=Hello;if(value||(setting title==Hello)){return 1;}if(value==1title.equals(Hello)){return 2;}}}And:ClassA a=new ClassA();a.getValue();What is the result?()A.1B.2C.Compilation fails.D.The code runs with no output.E.An exception is thrown at runtime.

publicclassClassA{publicintgetValue(){intvalue=0;booleansetting=true;Stringtitle=”Hello”;(value||(settingtitle==Hello”)){return1;}(value==1title.equals(”Hello”)){return2;}}}And:ClassAa=newClassA();a.getValue();Whatistheresult?()A.1B.2C.Compilationfails.D.Thecoderunswithnooutput.E.Anexceptionisthrownatruntime.

若有以下程序:includeusingnamespacestd;classA{private:int x; public:int x;void s 若有以下程序: #include<iostream> usingnamespacestd; classA { private: int x; public: int x; void setx(int i) { x=i; } int getx() { return x; } }; class B:public A { private: int m; public: int p; void setvalue (int a,int b,int C) { setx(A) ; z=b; m=c; } void display() { cout<<getx()<<","<<z<<","<<m<<end1; } }; int main() { B obj; obj.setvalue(2,3,4); obj.display(); return 0; } 程序运行以后的输出结果是A.产生语法错误B.2,3,4C.2,2,2D.4,3,2

有如下程序:includeusing namespace std;classA{public:A(){cout 有如下程序: #include<iostream> using namespace std; classA { public: A(){cout<<"A";} }; class B{public:B(){cout<<"B";}}; class C:public A { B b; public: C(){cout<<"C";} }; int main(){C obj;return 0;} 执行后的输出结果是( )A.ABCB.BACC.ACBD.CBA

下面程序段的输出结果为 package test; public class ClassA { int x=20; static int y=6; public static void main(String args[]) { ClassB b=new ClassB(); b.go(10); System.out.println("x="+b.x); } } class ClassB { int x; void go(int y) { ClassA a=new ClassA(); x=a.y; } }A.x=10B.x=20C.x=6D.编译不通过

有如下程序:includeusing namespace std;int i=1;class Fun{public:static int i;int 有如下程序: #include<iostream> using namespace std; int i=1; class Fun { public: static int i; int value(){return i-1;} int value()const{return i+1;} }; int Fun::i=2; int main() { int i=3; Fun fun 1; const Fun fun2; ______ return 0; } 若程序的输出结果是: 123 则程序中横线处的语句是( )。A.cout<<fun1.value()<<Fun::i<<fun2.value();B.cout<<Fun::i<<fun1.value()<<fun2.value();C.count<<fun.value()<<fun2.value()<<Fun::i;D.cout<<fun2.value()<<Fun::i<<fun1.value();

有如下类定义: Class MyClass{ int value; public: MyClass(int n): value(n){} int getValue()const{return value;} }; 则类MyClass的构造函数的个数是A.1个B.2个C.3个D.4个

有如下类的声明: class Base{ protected: int amount; public: Base(int n=0):amount(n){} int getAmount()const{return amount;} }; class Derived:public Base{ protected: int value public: Derived(int m,int n):value(m),Base(n){} int getData()const{return value+amount;} };已知x是一个Derived对象,则下列表达式中正确的是A.x. value+x. getAmount()B.x. getData()-x. getAmount()C.x. getData()-x. amountD.x. value+x. amount

写出程序运行的结果Public class BasePublic virtual string Hello() {return “Base”;}Public class Sub:BasePublic override string Hello() {return “Sub”;}1. Base b = new Base(); b.Hello;2. Sub s = new Sub(); s.Hello;3. Base b = new Sub (); b.Hello;4. Sub s = new Base(); s.Hello;

下面程序段的输出结果为( )。 package test; public class ClassA { int x=20: static int y=6; public static void main(String args[]) { ClassB b=new ClassB; go(10); System.out.println("x="+b.x); } } class ClassB { int X; void go(int y) { ClassA a=new ClassA; x=a.Y ; } }A.x=10B.x=20C.x=6D.编译不通过

Which line contains a constructor in this class definition?()   public class Counter { // (1)   int current, step;   public Counter(int startValue, int stepValue) { // (2)   set(startValue);   setStepValue(stepValue);  }   public int get() { return current; } // (3)   public void set(int value) { current = value; } // (4)   public void setStepValue(int stepValue) { step = stepValue; } // (5)  }  A、Code marked with (1) is a constructorB、Code marked with (2) is a constructorC、Code marked with (3) is a constructorD、Code marked with (4) is a constructorE、Code marked with (5) is a Constructor

public class SwitchTest {  public static void main(String[] args) {  System.out.println(“value = “ + switchIt(4));  }  public static int switchIt(int x) {  int j = 1;  switch (x) {  case 1: j++; case 2: j++;  case 3: j++;  case 4: j++;  case 5: j++;  default: j++;  }  return j + x; }  }  What is the result?()  A、 value = 3B、 value = 4C、 value = 5D、 value = 6E、 value = 7F、 value = 8

class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()  A、 0B、 1C、 2D、 Compilation fails.

Given the following interface definition, which definitions are valid?()   interface I {   void setValue(int val);   int getValue();   }    DEFINITION a:   (a) class a extends I {  int value;   void setValue(int val) { value = val;  }   int getValue() {  return value;  }   }   DEFINITION b:   (b) interface b extends I {   void increment();   }   DEFINITION c:   (c) abstract class c implements I {   int getValue() {  return 0;  }  abstract void increment();   }   DEFINITION d:   (d) interface d implements I {  void increment();  }   DEFINITION e:   (e) class e implements I {  int value;   public void setValue(int val) { value = val; }  }  A、Definition a.B、Definition b.C、Definition c.D、Definition d.E、Definition e.

class ClassA {  public int numberOfinstances;  protected ClassA(int numberOfinstances) {  this.numberOflnstances = numberOfinstances;  }  }  public class ExtendedA extends ClassA {  private ExtendedA(int numberOfinstances) {  super(numberOflnstances);  }  public static void main(String[] args) {  ExtendedA ext = new ExtendedA(420);  System.out.print(ext.numberOflnstances);  }  }  Which is true?() A、 420 is the output.B、 An exception is thrown at runtime.C、 All constructors must be declared public.D、 Constructors CANNOT use the private modifier.E、 Constructors CANNOT use the protected modifier.

public class SwitchTest {   public static void main (String args) {   System.out.PrintIn(“value =” +switchIt(4));   }   public static int switchIt(int x) {   int j = 1;   switch (x) {   case 1: j++;   case 2: j++;   case 3: j++;  case 4: j++;   case 5: j++;   default:j++;   }   return j + x;   }   }   What is the output from line 3? ()A、 Value = 3B、 Value = 4C、 Value = 5D、 Value = 6E、 Value = 7F、 Value = 8

10. public class Hello {  11. String title;  12. int value;  13. public Hello() {  14. title += “ World”;  15. }  16. public Hello(int value) {  17. this.value = value;  18. title = “Hello”;  19. Hello();  20. }  21. }  and:  30. Hello c = new Hello(5);  31. System.out.println(c.title);  What is the result?() A、 HelloB、 Hello WorldC、 Compilation fails.D、 Hello World 5E、 The code runs with no output.F、 An exception is thrown at runtime.

10. public class ClassA {  11. public void methodA() {  12. ClassB classB = new ClassB();  13. classB.getValue();  14. }  15. }  And:  20. class ClassB {  21. public ClassC classC;  22.  23. public String getValue() {  24. return classC.getValue();  25. }  26. }  And:  30. class ClassC {  31. public String value;  32.  33. public String getValue() {  34. value = “ClassB”;  35. return value;  36. }  37. }  Given:  ClassA a = new ClassA();  a.methodA();  What is the result?()A、 Compilation fails.B、 ClassC is displayed.C、 The code runs with no output.D、 An exception is thrown at runtime.

单选题class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()A 0B 1C 2D Compilation fails.

单选题public class ClassA{ public int getValue(){ int value=0; boolean setting=true; String title="Hello"; if(value||(setting title=="Hello")){return 1;} if(value==1title.equals("Hello")){return 2;} } } And: ClassA a=new ClassA(); a.getValue(); What is the result?()A1B2CCompilation fails.DThe code runs with no output.EAn exception is thrown at runtime.

单选题public class ClassA {  public int getValue() {  int value=0;  boolean setting = true;  String title=”Hello”;  (value || (setting  title == “Hello”)) { return 1; }  (value == 1  title.equals(”Hello”)) { return 2; }  }  } And:  ClassA a = new ClassA();  a.getValue();  What is the result?()A 1B 2C Compilation fails.D The code runs with no output.E An exception is thrown at runtime.