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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?()
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 */ } }


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更多 “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 */ } }” 相关考题
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考题 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; }

考题 public class ConstOver {  public ConstOver (int x, int y, int z)  {  }  }   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、 Public void ConstOver (byte x, byte y, byte z) { }

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 public class MethodOver {   private int x, y;   private float z;   public void setVar(int a, int b, float c){   x = a;   y = b;   z = c;   }   }   Which two overload the setVar method?()A、 void setVar (int a, int b, float c){  x = a;  y = b;  z = c;  }B、 public void setVar(int a, float c, int b) {  setVar(a, b, c);  }C、 public void setVar(int a, float c, int b) {  this(a, b, c);  }D、 public void setVar(int a, float b){  x = a;  z = b;  }E、 public void setVar(int ax, int by, float cz) {  x = ax;  y = by;  z = cz;  }

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 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; }

考题 单选题public class SyncTest (  private int x;  private int y;  private synchronized void setX (int i) (x=1;)  private synchronized void setY (int i) (y=1;)  public void setXY(int 1)(set X(i); setY(i);)  public synchronized Boolean check() (return x !=y;)  )  Under which conditions will check () return true when called from a different class?A  Check() can never return true.B  Check() can return true when setXY is called by multiple threads.C  Check() can return true when multiple threads call setX and setY separately.D  Check() can only return true if SyncTest is changed to allow x and y to be setseparately.

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 abstract class Shape {  int x;  int y;  public abstract void draw();  public void setAnchor(int x, int y) {  this.x = x;  this.y = y;  }  }  and a class Circle that extends and fully implements the Shape class. Which is correct?()A  Shape s = new Shape(); s.setAnchor(10,10); s.draw();B  Circle c = new Shape(); c.setAnchor(10,10); c.draw();C  Shape s = new Circle(); s.setAnchor(10,10); s.draw();D  Shape s = new Circle(); s-setAnchor(10,10); s-draw();E  Circle c = new Circle(); c.Shape.setAnchor(10,10); c.Shape.draw();

考题 单选题public class SyncTest {  private int x;  private int y;  private synchronized void setX( int i ) { x = i; }  private synchronized void setY( int i ) { y = i; }  public void setXY( int i ) { setX(i); setY(i); }  public synchronized boolean check() { return x != y; }  }   Under which condition will check return true when called from a different class? ()A  check can never return true.B  check can return true when setXY is called by multiple threads.C  check can return true when multiple threads call setX and setY separately.D  check can return true only if SyncTest is changed to allow x and y to be set separately.