public class X {   public static void main (Stringargs) {   int a = new int [1]   modify(a);   System.out.printIn(a[0]);   }   public static void modify (int a) {   a[0] ++;    }    }   What is the result?()  A、 The program runs and prints “0”B、 The program runs and prints “1”C、 The program runs but aborts with an exception.D、 An error “possible undefined variable” at line 4 causes compilation to fail.E、 An error “possible undefined variable” at line 9 causes compilation to fail.

public class X {   public static void main (Stringargs) {   int a = new int [1]   modify(a);   System.out.printIn(a[0]);   }   public static void modify (int a) {   a[0] ++;    }    }   What is the result?()  

  • A、 The program runs and prints “0”
  • B、 The program runs and prints “1”
  • C、 The program runs but aborts with an exception.
  • D、 An error “possible undefined variable” at line 4 causes compilation to fail.
  • E、 An error “possible undefined variable” at line 9 causes compilation to fail.

相关考题:

有以下程序: included using namespace std; class Base { public: Base( ) { x=0; } 有以下程序:included<iostream>using namespace std;class Base{public:Base( ){x=0;}int x;};class Derived1:virtual public Base{public:Derived1( ){x=10;}};class Derived2:virtual public Base{public:Derived2( ){x=20;}};class Derived: public Derived1,protected Derived2{ };int main( ){Derived obj;cout<<obj. x<<endl;return 0;}该程序运行后的输出结果是______。

下列哪个方法可用于创建一个可运行的类? ( )A.public class X implements Runable {public void run(){...,.,}}B.public class X implements Thread {public void run(){......}}C.public class X implements Thread {public int run(){……}}D.public class X implements Runable {protected void run(){.....}}

在如下源代码文件Test.java中, 哪个是正确的类定义?() A.public class test { public int x = 0; public test(int x) { this.x = x; } }B.public class Test{ public int x=0; public Test(int x) { this.x = x; } }C.public class Test extends T1, T2 { public int x = 0; public Test (int x) { this.x = x; } }D.public class

下列类头定义中,错误的是( )。 A.class x { .... }B.public x extends y { .... }C.public class x extends y { .... }D.class x extends y implements y1 { .... }

有以下程序:include using namespace std; class Base { public: Base() { K=0; } int 有以下程序:include<iostream>using namespace std;class Base{public:Base(){K=0;}int x;};class Derivedl:virtual public Base{public:Derivedl(){x=10;}};class Derived2:virtua1 public Base

若有以下程序:include using namespace std;class Base{public: Base ( ) {x=0; } in 若有以下程序: #include <iostream> using namespace std; class Base { public: Base ( ) { x=0; } int x; }; class Derivedl : virtual public Base { public: Derivedl () { x=10; } }; class Derived2 : virtual public Base { public: Derived2 () { x=20; } }; class Derived : public Derivedl,protected Derived2{ }; int main ( ) { Derived obj; cout<<obj .x<<end1; return 0; } 该程序运行后的输出结果是 ( )。A.20B.30C.10D.0

在下列源代码文件Test.java中,正确定义类的代码是( )。A.pblic class test { public int x=0; public test(int x) { this. x=x;} }B.public class Test { public int x=0; public Test(int x) { this. x=x;} }C.public class Test extends T1,T2{ public int x = 0; public Test(int x){ this. x = x; } }D.protected class Test extends T2{ public int x = 0; public Test(int x) { this. x = x; } }

有以下程序: include class A { intx; public: A(int a) { x=a;} friend class B; 有以下程序:include<iostream.h>class A{int x;public:A(int a){x=a;}friend class B;}class B{public:void print(A a){a. x--;cout<<a.x<<end1;}};void main(){A a(10);B b;b.print(a) ;}程序执行后的输出结果是【 】。

有如下程序:include using namespace std;Class x{protected: int a;public: x() {a= 有如下程序: #include <iostream> using namespace std; Class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout<<A.1B.123C.242D.244

若有以下程序:include using namespace std; class Base public: Base() { x=0;} in 若有以下程序: #include <iostream> using namespace std; class Base public: Base() { x=0; } int x; }; class Derivedl: virtual public Base public: Derived1() { x=10; } }; class Derived2: virtual public Base publici Derived2() x=20; }; class Derived :public Derived1,protected Derived2 {}; int main() Derived obj; cout<<obj.x<<end1; return 0; } 该程序运行后的输出结果是A.20B.30C.10D.0

若有以下程序:includeusing namespace std;class data{public: int x; data(int x){ 若有以下程序: #include<iostream> using namespace std; class data { public: int x; data(int x) { data::x=x; } class A private: data dl; public: A(int x): dl(x){ } void dispaO cout<<dl.x<<","; } }; class B: public A { private: data d2; public: B(int x):A(x-1),d2(x){ } void dispb() { cout<<d2.x<<endl; } }; class C: public B { public: C(int x):B(x-1){ } void disp0 { dispa(); dispb(); } }; int main() { C obj(5); obj.disp(); return 0; } 程序执行后的输出结果是( )。A.5,5B.4,5C.3,4D.4,3

有如下程序: include class x { protected: int a; public:x(){ a=1;} }; class x 有如下程序: #include <iostream.h> class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout<<a; } }; class x2 : virtual public x { public: x2() { a+=2; cout<<a; } }; class y : public xl,public x2 { public: y() { cout<<a<<end1; } }; int main() { y obj; return O; } 该程序运行后的输出结果是( )。A.1B.123C.242D.244

若有以下程序: include using namespace std;class Base{public:Base ( ){x=0;}int x 若有以下程序:# include <iostream>using namespace std;class Base{public: Base ( ) { x=0; } int x;};class Derived1 : virtual public Base{public: Derived1 ( ) { x=10; }}; class Derived2 : virtual public Base{public: Derived2 () { x=20; }};class Derived : public Derived1,protected Derived2{ };int main(){ Derived obj; cout<<obj.x<<end1; return 0;} 该程序运行后的输出结果是A.10B.20C.30D.0

若有以下程序:include using namespace std;class Base{public:Base (){x=0;}int x;} 若有以下程序: #include <iostream> using namespace std; class Base { public: Base () { x=0; } int x; }; class Derived1 : virtual public Base { public: Derived1 () { x=10; } }; class Derived2 : virtual public Base { public: Derived2 () { x=20; } }; class Derived : public Derived1,protected Derived2{ }; int main() { Derived obi; cout<<obj.x<<endl; return 0; } 该程序运行后的输出结果是A.20B.30C.10D.0

若有以下程序:includeusingnamespacestd;classBase{public: Base() {x=0; } intx;}; 若有以下程序: #include <iostream> using namespace std; class Base { public: Base() { x=0; } int x; }; class Derivedl : virtual public Base { public: Derivedl() { x=10; } }; class Derived2 : virtual public Base { public: Derived2() { x=20; } }; class Derived : public Derivedl,protected Derived2 { }; int main () { Derived obj; cout<<obj.x<<end1; return 0; } 该程序运行后的输出结果是( )。A.10B.20C.30D.0

若有以下程序:includeusing namespace Std;Class Base{public:Base(){x=0;}int x;};c 若有以下程序: #include<iostream> using namespace Std; Class Base {public: Base() {x=0;} int x;}; class Derivedl:virtua1 public Base {public: Derived1() {x=10;}}; class Derived2:virtual1 public Base {public: Derived2()A.20B.30C.10D.0

在下列源代码文件Test.java中, ( )是正确的类定义。A.public class test{B.public class Test{ public int x=0;public int x=0; public test (intx) public Test (int x){ {this.x=x; this.x=x;} }} }C.public class Test extends T1,T2{D.protected class Test extends T2{ public int=0;public int x=0; public Test(int x){Public Test (int x){ this.x=x;this.x=x: }} }}

在下列源代码文件Test.java中,哪个选项是正确的类定义? ( )A.public class test { public int x=0; public test(int x) { this.x=x; } }B.public class Test { public int x=0; public Test(int x) { this.x=x; } }C.public class Test extends Ti,T2 { public int x=0; public Test(int x) { this.x=x; } }D.protected class Test extends T2 { public int x=0; public Test(int x) { this.x=x; } }

In which two cases does the compiler supply a default constructor for class A?()  A、 class A{}B、 class A { public A(){} }C、 class A { public A(int x){} }D、 class Z {} class A extends Z { void A(){} }

Which three demonstrate an “is a” relationship?() A、 public class X { }  public class Y extends X { }B、 public interface Shape { }  public interface Rectangle extends Shape{ }C、 public interface Color { }  public class Shape { private Color color; }D、 public interface Species { }  public class Animal { private Species species; }E、 public class Person { } public class Employee {  public Employee(Person person) { }F、 interface Component { }  class Container implements Component { private Component[] children; }

下列类的定义中,错误的是()。A、class x{....}B、public x extends y{....}C、public class x extends y{....}D、class x extends y implements y1{....}

public class X {  public X aMethod() { return this;}  }  public class Y extends X {  }  Which two methods can be added to the definition of class Y?()A、 public void aMethod() {}B、 private void aMethod() {}C、 public void aMethod(String s) {}D、 private Y aMethod() { return null; }E、 public X aMethod() { return new Y(); }

What produces a compiler error?()  A、 class A { public A(int x) {} }B、 class A {} class B extends A { B() {} }C、 class A { A() {} } class B { public B() {} }D、 class Z { public Z(int) {} } class A extends Z {}

public abstract class Shape {  private int x;  private int y;  public abstract void draw();  public void setAnchor(int x, int y) {  this.x = x;  this.y = y;  }  }  Which two classes use the Shape class correctly?()A、 public class Circle implements Shape { private int radius; }B、 public abstract class Circle extends Shape { private int radius; }C、 public class Circle extends Shape { private int radius; public void draw(); }D、 public abstract class Circle implements Shape { private int radius; public void draw(); }E、 public class Circle extends Shape { private int radius;public void draw() {/* code here */} }F、 public abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }

多选题Which three demonstrate an “is a” relationship?()Apublic class X { }  public class Y extends X { }Bpublic interface Shape { }  public interface Rectangle extends Shape{ }Cpublic interface Color { }  public class Shape { private Color color; }Dpublic interface Species { }  public class Animal { private Species species; }Epublic class Person { } public class Employee {  public Employee(Person person) { }Finterface Component { }  class Container implements Component { private Component[] children; }

多选题public abstract class Shape {  private int x;  private int y;  public abstract void draw();  public void setAnchor(int x, int y) {  this.x = x;  this.y = y;  }  }  Which two classes use the Shape class correctly?()Apublic class Circle implements Shape { private int radius; }Bpublic abstract class Circle extends Shape { private int radius; }Cpublic class Circle extends Shape { private int radius; public void draw(); }Dpublic abstract class Circle implements Shape { private int radius; public void draw(); }Epublic class Circle extends Shape { private int radius;public void draw() {/* code here */} }Fpublic abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }

多选题public class X {  public X aMethod() { return this;}  }  public class Y extends X {  }  Which two methods can be added to the definition of class Y?()Apublic void aMethod() {}Bprivate void aMethod() {}Cpublic void aMethod(String s) {}Dprivate Y aMethod() { return null; }Epublic X aMethod() { return new Y(); }

单选题What produces a compiler error?()A class A { public A(int x) {} }B class A {} class B extends A { B() {} }C class A { A() {} } class B { public B() {} }D class Z { public Z(int) {} } class A extends Z {}