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class BaseClass{  private float x= 1.0f;  protected void setVar (float f) {x = f;}  }  class SubClass extends BaseClass   {  private float x = 2.0f;  //insert code here  }   Which two are valid examples of method overriding?()        

  • A、 Void setVar(float f) {x = f;}
  • B、 Public void setVar(int f) {x = f;}
  • C、 Public void setVar(float f) {x = f;}
  • D、 Public double setVar(float f) {x = f;}
  • E、 Public final void setVar(float f) {x = f;}
  • F、 Protected float setVar() {x=3.0f; return 3.0f; }

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更多 “ class BaseClass{  private float x= 1.0f;  protected void setVar (float f) {x = f;}  }  class SubClass extends BaseClass   {  private float x = 2.0f;  //insert code here  }   Which two are valid examples of method overriding?()        A、 Void setVar(float f) {x = f;}B、 Public void setVar(int f) {x = f;}C、 Public void setVar(float f) {x = f;}D、 Public double setVar(float f) {x = f;}E、 Public final void setVar(float f) {x = f;}F、 Protected float setVar() {x=3.0f; return 3.0f; }” 相关考题
考题 类A定义如下: class A { private int x=10; int getx() { return x;} } class B extends A { private int x=15; //需要覆盖getx()方法 } 在下述方法中可以在类B中覆盖getx()方法的是 ( )A.int getx(){…}B.int getx(float f){…}C.float getx(){…}D.double getx(float f){…}

考题 1. class BaseClass {  2. private float x = 1.of;  3. protected float getVar() { return x; }  4. }  5. class SubClass extends BaseClass {  6. private float x = 2.Of;  7. // insert code here 8. }   Which two are valid examples of method overriding when inserted at line 7?() A、 float getVar() { return x; }B、 public float getVar() { return x; }C、 public double getVar() { return x; }D、 protected float getVar() { return x; }E、 public float getVar(float f) { return f; }

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 line6, causes compilation to fail?()  A、 public void getNum(){}B、 public void getNum(double d){}C、 public float getNum() { return 4.0f; }D、 public double getNum(float d) { return 4.0d; }

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 class One {  void foo() {}  }  class Two extends One {   //insert method here  }  Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 int foo() { /* more code here */ }B、 void foo() { /* more code here */ }C、 public void foo() { /* more code here */ }D、 private void foo() { /* more code here */ }E、 protected void foo() { /* more code here */ }

考题 1. abstract class AbstractIt {  2. abstract float getFloat();  3. }  4. public class AbstractTest extends AbstractIt {  5. private float f1 = 1.0f;  6. private float getFloat() { return f1; }  7. }  What is the result?() A、 Compilation succeeds.B、 An exception is thrown.C、 Compilation fails because of an error at line 2.D、 Compilation fails because of an error at line 6.

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 abstract class abstrctIt {   abstract float getFloat ();   }   public class AbstractTest extends AbstractIt {   private float f1= 1.0f;   private float getFloat () {return f1;}   }   What is the result? ()A、 Compilation is successful.B、 An error on line 6 causes a runtime failure.C、 An error at line 6 causes compilation to fail.D、 An error at line 2 causes compilation to fail.

考题 Which two cause a compiler error?() A、 float[] = new float(3);B、 float f2[] = new float[];C、 float[] f1 = new float[3];D、 float f3[] = new float[3];E、 float f5[] = { 1.0f, 2.0f, 2.0f };F、 float f4[] = new float[] { 1.0f. 2.0f. 3.0f};

考题 class BaseClass{   private float x= 1.0f;   protected void setVar (float f) {x = f;}   }   class SubClass exyends BaseClass {   private float x = 2.0f;   //insert code here  8. }   Which two are valid examples of method overriding?()A、 Void setVar(float f) {x = f;}B、 Public void setVar(int f) {x = f;}C、 Public void setVar(float f) {x = f;}D、 Public double setVar(float f) {x = f;}E、 Public final void setVar(float f) {x = f;}F、 Protected float setVar() {x=3.0f; return 3.0f; }

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 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 public class MethodOver  {  public void setVar (int a, int b, float c)  {  }  }   Which two overload the setVar method?()  A、 Private void setVar (int a, float c, int b)  { }B、 Protected void setVar (int a, int b, float c) { }C、 Public int setVar (int a, float c, int b) (return a;)D、 Public int setVar (int a, int b, float c) (return a;)E、 Protected float setVar (int a, int b, float c) (return c;)

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 Given:   10. class One {   11. void foo() { }   12. }   13. class Two extends One {   14. //insert method here   15. }   Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 public void foo() { /* more code here */ }B、 private void foo() { /* more code here */ }C、 protected void foo() { /* more code here */ }D、 int foo() { /* more code here */ }  E、 void foo() { /* more code here */ }

考题 多选题public class MethodOver  {  public void setVar (int a, int b, float c)  {  }  }   Which two overload the setVar method?()APrivate void setVar (int a, float c, int b)  { }BProtected void setVar (int a, int b, float c) { }CPublic int setVar (int a, float c, int b) (return a;)DPublic int setVar (int a, int b, float c) (return a;)EProtected float setVar (int a, int b, float c) (return c;)

考题 单选题abstract class abstrctIt {  abstract float getFloat ();  } public class AbstractTest extends AbstractIt { private float f1= 1.0f;  private float getFloat () {return f1;}  }   What is the result?()A  Compilation is successful.B  An error on line 6 causes a runtime failure.C  An error at line 6 causes compilation to fail.D  An error at line 2 causes compilation to fail.

考题 多选题class BaseClass{  private float x= 1.0f;  protected void setVar (float f) {x = f;}  } class SubClass extends BaseClass   {  private float x = 2.0f;  //insert code here 16. }   Which two are valid examples of method overriding?()AVoid setVar(float f) {x = f;}BPublic void setVar(int f) {x = f;}CPublic void setVar(float f) {x = f;}DPublic double setVar(float f) {x = f;}EPublic final void setVar(float f) {x = f;}FProtected float setVar() {x=3.0f; return 3.0f; }

考题 单选题1. abstract class AbstractIt {  2. abstract float getFloat();  3. }  4. public class AbstractTest extends AbstractIt {  5. private float f1 = 1.0f;  6. private float getFloat() { return f1; }  7. }  What is the result?()A  Compilation succeeds.B  An exception is thrown.C  Compilation fails because of an error at line 2.D  Compilation fails because of an error at line 6.

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1. class Super {  2. public float getNum() { return 3.0f; }  3. }  4.   5. public class Sub extends Super {  6.   7. }  Which method, placed at line6, causes compilation to fail?()A  public void getNum(){}B  public void getNum(double d){}C  public float getNum() { return 4.0f; }D  public double getNum(float d) { return 4.0d; }

考题 多选题1. class BaseClass {  2. private float x = 1.of;  3. protected float getVar() { return x; }  4. }  5. class SubClass extends BaseClass {  6. private float x = 2.Of;  7. // insert code here 8. }   Which two are valid examples of method overriding when inserted at line 7?()Afloat getVar() { return x; }Bpublic float getVar() { return x; }Cpublic double getVar() { return x; }Dprotected float getVar() { return x; }Epublic float getVar(float f) { return f; }

考题 多选题class BaseClass{   private float x= 1.0f;   protected void setVar (float f) {x = f;}   }   class SubClass exyends BaseClass {   private float x = 2.0f;   //insert code here  8. }   Which two are valid examples of method overriding?()AVoid setVar(float f) {x = f;}BPublic void setVar(int f) {x = f;}CPublic void setVar(float f) {x = f;}DPublic double setVar(float f) {x = f;}EPublic final void setVar(float f) {x = f;}FProtected float setVar() {x=3.0f; return 3.0f; }

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 多选题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?()Avoid setVar (int a, int b, float c){ x = a; y = b; z = c; }Bpublic void setVar(int a, float c, int b) { setVar(a, b, c); }Cpublic void setVar(int a, float c, int b) { this(a, b, c); }Dpublic void setVar(int a, float b){ x = a; z = b; }Epublic void setVar(int ax, int by, float cz) { x = ax; y = by; z = cz; }

考题 多选题class BaseClass{  private float x= 1.0f;  protected void setVar (float f) {x = f;}  }  class SubClass extends BaseClass   {  private float x = 2.0f;  //insert code here  }   Which two are valid examples of method overriding?()AVoid setVar(float f) {x = f;}BPublic void setVar(int f) {x = f;}CPublic void setVar(float f) {x = f;}DPublic double setVar(float f) {x = f;}EPublic final void setVar(float f) {x = f;}FProtected float setVar() {x=3.0f; return 3.0f; }

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; }