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)

Which are syntactically valid statement at// point x?()     class Person {     private int a;  public int change(int m){  return m;  }     }  public class Teacher extends Person {     public int b;  public static void main(String arg[]){     Person p = new Person();     Teacher t = new Teacher();    int i;  // point x     }    } 

  • A、 i = m;
  • B、 i = b;
  • C、 i = p.a;
  • D、 i = p.change(30);
  • E、 i = t.b.

参考答案

更多 “ Which are syntactically valid statement at// point x?()     class Person {     private int a;  public int change(int m){  return m;  }     }  public class Teacher extends Person {     public int b;  public static void main(String arg[]){     Person p = new Person();     Teacher t = new Teacher();    int i;  // point x     }    } A、 i = m;B、 i = b;C、 i = p.a;D、 i = p.change(30);E、 i = t.b.” 相关考题
考题 能将程序补充完整的选项是( )。class Person{ private int a; public int change(int m){ return m; }}public class Teacher extends Person{ public int b; public static void main(String arg[]) { Person p = new Person(); Teacher t = new Teacher(); int i; ______ }} B.A.i=mB.i=bC. i=p.aD.i=p. change(50)

考题 能将程序补充完整的选项是______。 class Person{ private int a; phblic int change(int m){return m;} } public class Teacher extends Person{ public int b; public static void main(String arg[ ]){ Person p=new Person( ); Teacher t=new Teacher( ); int i; ______; } }A.i=mB.i=bC.i=p.aD.i=p.change(50)

考题 下列程序运行后的输出结果是( )。#include#includeusing namespace std;class Person{public:Person(string n):name(n) { coutprivate:int year,month,day;};class Student:public Person{public:Student(string n,int y,int m,int d,char c):birthday(y,m,d),sex(c),Person(n) { coutA. SB.PSC.DPSD.PDS

考题 在下列程序的划线处应填入的语句是class Person { private int a;}public class Man extends Person{ public int b; public static void main (String arg []){ Person p=new Person(); Man t=new Man(); int i: }}A.i=w;B.i=bC.i=p.a;D.i=t.b;

考题 在下列程序的划线处应填入的语句是 class Pemon { pnvate int a; } public class Man extends Person { public int b; public static void main(String arg[ ] ) { Person p = new Person( ); Man t = new Man( ); int i; ________ } }A.i = w;B.i = b;C.i = p.a;D.i = t.b;

考题 能将程序补充完整的选项是 class Person { private int a; public int change(int m){return m; } } public class Teacher extends Person { public int b; public static void main(String arg[]) { Person p=new Person(); Teacher t=new Teacher(); int i; ______ } }A.i=mB.i=bC.i=p.aD.i=p.change(50)

考题 interface A{int x = 0;}class B{int x =1;}class C extends B implements A {public void pX(){System.out.println(x);}public static void main(String[] args) {new C().pX();}}

考题 在下列程序的划线处应填入的语句是( )。 class Person { private int a: } public class Man extends Person{ public int b; public static void main(String arg []){ Person p=newPerson(); Man t=new Man(); int i; _________________ } }A.i=w;B.i=b;C.i=P.a;D.i=t.b;

考题 在下列程序的划线处应填入的语句是 ( ) class Person { private int a; } public class Man extends Person { public int b public static void main(String arg[]) { Person P=new Person(); Man t=new Man(); int i; ______ } }A.i=w;B.i=b;C.i=p.a;D.i=t,b;

考题 若有以下程序:includeusing namespace std;class A{private:int x;public:int z;void 若有以下程序:#include<iostream>using namespace std;class A {private: int x;public: int z; 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

考题 以下程序调试结果为:public class Test {int m=5;public void some(int x) {m=x;}public static void main(String args []) {new Demo().some(7);}}class Demo extends Test {int m=8;public void some(int x) {super.some(x);System.out.println(m);}}A.5B.8C.7D.无任何输出E.编译错误

考题 public class Person {  private String name, comment;  private int age;  public Person(String n, int a, String c) {  name = n; age = a; comment = c;  }  public boolean equals(Object o) {  if(! (o instanceof Person)) return false;  Person p = (Person)o;  return age == p.age  name.equals(p.name);  }  }  What is the appropriate definition of the hashCode method in class Person?() A、 return super.hashCode();B、 return name.hashCode() + age * 7;C、 return name.hashCode() + comment.hashCode() /2;D、 return name.hashCode() + comment.hashCode() / 2 - age * 3;

考题 对于下列代码: 1) class Person {   2} public void printValue(int i, int j) {//... }     3} public void printValue(int i){//... }    4} }   5) public class Teacher extends Person { 6} public void printValue( ) {//... }     7} public void printValue(int i) {//...}     8} public static void main(String args[]){     9} Person t = new Teacher( );     10} t.printValue(10);     11} } 第10行语句将调用哪行语句?()A、 line 2B、 line 3C、 line 6D、 line 7

考题 public class Parent{     public void change(int x){} }  public class Child extends Parent{     //覆盖父类change方法  }  下列哪个声明是正确的覆盖了父类的change方法?() A、 protected void change(int x){}B、 public void change(int x, int y){}C、 public void change(String s){}D、 public void change(int x){}

考题 Given the uncompleted code of a class:     class Person {  String name, department;     int age;  public Person(String n){  name = n; }  public Person(String n, int a){  name = n;  age = a;  }  public Person(String n, String d, int a) {  // doing the same as two arguments version of constructor     // including assignment name=n,age=a    department = d;     }     }  Which expression can be added at the "doing the same as..." part of the constructor?() A、 Person(n,a);B、 this(Person(n,a));C、 this(n,a);D、 this(name,age);

考题 class Top {  static int x = 1;  public Top(int y) { x *= 3; }  }  class Middle extends Top {  public Middle() { x += 1; }  public static void main(String [] args) {  Middle m = new Middle();  System.out.println(x);  }  }  结果为:() A、1B、2C、3D、编译失败

考题 1) class Person {  2) public void printValue(int i, int j) {/*…*/ }     3) public void printValue(int i){/*...*/ }     4) }  5) public class Teacher extends Person {     6) public void printValue() {/*...*/ }     7) public void printValue(int i) {/*...*/}     8) public static void main(String args[]){     9) Person t = new Teacher();     10) t.printValue(10);     11) }    12) }  Which method will the statement on line 10 call? ()  A、 on line 2B、 on line 3C、 on line 6D、 on line 7

考题 Given the following code:     public class Person{ static int arr[] = new int[10];  public static void main(String a[]) {     System.out.println(arr[1];)     }     }  Which statement is correct?()   A、 When compilation some error will occur.B、 It is correct when compilation but will cause error when running.C、 The output is zero.D、 The output is null.

考题 public class Parent {     int change() {…}     }  class Child extends Parent {     }  Which methods can be added into class Child?()    A、 public int change(){}B、 int chang(int i){}C、 private int change(){}D、 abstract int chang(){}

考题 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?()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 */ } }

考题 多选题Which are syntactically valid statement at// point x?()     class Person {     private int a;  public int change(int m){  return m;  }     }  public class Teacher extends Person {     public int b;  public static void main(String arg[]){     Person p = new Person();     Teacher t = new Teacher();    int i;  // point x     }    }Ai = m;Bi = b;Ci = p.a;Di = p.change(30);Ei = t.b.

考题 单选题1) class Person {  2) public void printValue(int i, int j) {/*…*/ }     3) public void printValue(int i){/*...*/ }     4) }  5) public class Teacher extends Person {     6) public void printValue() {/*...*/ }     7) public void printValue(int i) {/*...*/}     8) public static void main(String args[]){     9) Person t = new Teacher();     10) t.printValue(10);     11) }    12) }  Which method will the statement on line 10 call? ()A  on line 2B  on line 3C  on line 6D  on line 7

考题 多选题1) class Person { 2) public void printValue(int i, int j) {/*…*/ }    3) public void printValue(int i){/*...*/ }    4) } 5) public class Teacher extends Person {    6) public void printValue() {/*...*/ }    7) public void printValue(int i) {/*...*/}    8) public static void main(String args[]){    9) Person t = new Teacher();    10) t.printValue(10);   11) }    12) } Which method will the statement on line 10 call?()Aon line 2Bon line 3Con line 6Don line 7

考题 单选题现有      public class Parentt      public void change (int x){)     )      public class Child extends Parent{     //覆盖父类change方法     }      下列哪个声明是正确的覆盖了父类的change方法?()A   protected void change (int x){}B   public void change(int x,  int y){}C   public void change (int x){}D   public void change (String s){}

考题 单选题对于下列代码: 1) class Person {   2} public void printValue(int i, int j) {//... }     3} public void printValue(int i){//... }    4} }   5) public class Teacher extends Person { 6} public void printValue( ) {//... }     7} public void printValue(int i) {//...}     8} public static void main(String args[]){     9} Person t = new Teacher( );     10} t.printValue(10);     11} } 第10行语句将调用哪行语句?()A  line 2B  line 3C  line 6D  line 7

考题 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 */ } }

考题 单选题public class Person {  private String name, comment;  private int age;  public Person(String n, int a, String c) {  name = n; age = a; comment = c;  }  public boolean equals(Object o) {  if(! (o instanceof Person)) return false;  Person p = (Person)o;  return age == p.age  name.equals(p.name);  }  }  What is the appropriate definition of the hashCode method in class Person?()A  return super.hashCode();B  return name.hashCode() + age * 7;C  return name.hashCode() + comment.hashCode() /2;D  return name.hashCode() + comment.hashCode() / 2 - age * 3;