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下列接口中标注的(A,B,C,D)中,哪两个是错误的? interface Takecare { protected void speakHello(); //A public abstract static void cry(); //B int f(); //C abstract float g(); //D }
A.A
B.B
C.C
D.D
参考答案和解析
A
更多 “下列接口中标注的(A,B,C,D)中,哪两个是错误的? interface Takecare { protected void speakHello(); //A public abstract static void cry(); //B int f(); //C abstract float g(); //D }A.AB.BC.CD.D” 相关考题
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下列程序片段中,能通过编译的是A.public abstract class Animal{ public void speak();}B.public abstract class Animal{ public void speak(){}}C.public class Animal{ public abstract void speak();}D.public abstract class Animal{ public abstract void speak(){}}
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Given:10. interface Data { public void load(); }11. abstract class Info { public abstract void load(); }Which class correctly uses the Data interface and Info class?()()
A.B.C.D.E.F.
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下列______选项不是InputStream类中的方法。A.public abstract int read() throws IOExceptionB.public final void writeInt (int V)throws IOExceptionC.public int available() throws IOExceptionD.public void close() throws IOException
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下列程序片段中,能通过编译的是( )。A.public abstract class Animal{public void speak( );}B.public abstract class Animal{public void speak( ){};}C.public class Animal{pubilc abstract void speak( );}D.public abstract class Animal{pubile abstract void speak( ){};}
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下面的代码中有什么错误吗?_______using System;class A{public virtual void F(){Console.WriteLine("A.F");}}abstract class B:A{public abstract override void F();
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下列哪个成员方法声明是正确的? ( )A.public abstract final int f(){...}B.public static boolean f(){...}C.static protected void g(a,{...}D.protected private number;
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下列程序片段中,能通过编译的是( )。 A.public abstract class Animal{ public void speak;}S
下列程序片段中,能通过编译的是( )。A.public abstract class Animal{ public void speak;}B.public abstract class Animal{ public void speak{);}C.public class Animal{ pubilc abstract void speak;}D.public abstract class Animal{ pubile abstract void speak{};}
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指出下面哪一项是在抽象类中声明一个抽象方法。( )A.public abstract method();B.public abstract void method();C.public void abstract Method();D.public void method(){abstract;}
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下列哪个成员方法声明是正确的? ( )A.public abstract final int f(){…}B.public static boolean f(){…}C.static protected void g(a,b){…}D.protected private number;
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Which will declare a method that is available to all members of the same package and can be referenced without an instance of the class?() A、 Abstract public void methoda();B、 Public abstract double methoda();C、 Static void methoda(double d1){}D、 Public native double methoda(){}E、 Protected void methoda(double d1){}
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Which will declare a method that is available to all members of the same package and be referenced without an instance of the class?()A、 abstract public void methoda ();B、 public abstract double inethoda ();C、 static void methoda (double dl) {}D、 public native double methoda () {}E、 protected void methoda (double dl) {}
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Which lines of code are valid declarations of a native method when occurring within the declaration of the following class?() public class Qf575 { // insert declaration of a native method here } A、native public void setTemperature(int kelvin);B、private native void setTemperature(int kelvin);C、protected int native getTemperature();D、public abstract native void setTemperature(int kelvin);E、native int setTemperature(int kelvin) {}
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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 interface Foo { int k = 4; 3. } Which three are equivalent to line 2?()A、 final int k = 4;B、 public int k = 4;C、 static int k = 4;D、 abstract int k = 4;E、 volatile int k = 4;F、 protected int k = 4;
考题
Which will declare a method that forces a subclass to implement it? () A、 Public double methoda();B、 Static void methoda (double d1) {}C、 Public native double methoda();D、 Abstract public void methoda();E、 Protected void methoda (double d1){}
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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.
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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; }
考题
Which will declare the method that forces a subclass to implement it?()A、 public double methoda ():B、 static void methoda(double d1) {}C、 public native double methoda ():D、 abstract public foid methoda ():E、 protected void methoda (double d1) {}
考题
public interface Foo{ int k = 4; } Which three are equivalent to line 2? ()A、 Final int k = 4;B、 Public int k = 4;C、 Static int k = 4;D、 Private int k = 4;E、 Abstract int k = 4;F、 Volatile int k = 4;G、 Transient int k = 4;H、 Protected int k = 4;
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; } }ADefinition a.BDefinition b.CDefinition c.DDefinition d.EDefinition e.
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Which will declare a method that forces a subclass to implement it? ()A
Public double methoda();B
Static void methoda (double d1) {}C
Public native double methoda();D
Abstract public void methoda();E
Protected void methoda (double d1){}
考题
单选题Which will declare a method that is available to all members of the same package and can be referenced without an instance of the class?()A
Abstract public void methoda();B
Public abstract double methoda();C
Static void methoda(double d1){}D
Public native double methoda() {}E
Protected void methoda(double d1) {}
考题
单选题Which will declare a method that is available to all members of the same package and be referenced without an instance of the class?()A
abstract public void methoda ();B
public abstract double inethoda ();C
static void methoda (double dl) {}D
public native double methoda () {}E
protected void methoda (double dl) {}
考题
单选题现有: interface Animal { void eat () ; } //insert code here public class HouseCat extends Feline { public void eat() { } } 和五个申明 abstract class Feline implements Animal { } abstract class Feline implements Animal { void eat () ; } abstract class Feline implements Animal { public void eat();} abstract class Feline implements Animal { public void eat() {} } abstract class Feline implements Animal { abstract public void eat();} 结果为:()A
1B
2C
3D
4
考题
单选题Which will declare the method that forces a subclass to implement it?()A
public double methoda ():B
static void methoda(double d1) {}C
public native double methoda ():D
abstract public foid methoda ():E
protected void methoda (double d1) {}
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