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)
判断题
interface中定义的常量不要写public、static、final的修饰词,方法需要写public修饰词。
A

B


参考答案

参考解析
解析: 暂无解析
更多 “判断题interface中定义的常量不要写public、static、final的修饰词,方法需要写public修饰词。A 对B 错” 相关考题
考题 下列是定义一个接口ITF的程序,在横线处应填入的选项是 ( )public interface ITF{public static final double PI=3.14,public ______ double area(double a,double b);}A.interfaeeB.staticC.finalD.abstract

考题 把一个对象写到一个流中相对比较简单,具体是通过调用ObjectOutputStream类的writeObject()方法实现的,那么该方法的定义为( )。A.public final int writeObject(Object obj) throws IOExceptionB.public final void writeObject(Object obj) throws IOExceptionC.public Object writeObject(Object obj) throws IOExceptionD.public final Object writeObject(Object obj) throws IOException

考题 下列是定义一个接口ITF的程序,在横线处应填入的选项是( )。 publid interface ITF { public static final double PI=3.14; public______double area(double a,double B) ; }A.interfaceB.staticC.finalD.abstract

考题 下列程序的输出结果是 interface Inter{ public final static int A=100; } class My implements Inter{ public static void main (String args[ ]) {System.out.println(A) ; }A.100B.0C.AD.程序有错误

考题 public class Something {public static void main(String[] args) {Other o = new Other();new Something().addOne(o);}public void addOne(final Other o) {o.i++;}}class Other {public int i;}和上面的很相似,都是关于final 的问题,这有错吗?

考题 阅读以下说明以及Java程序。【说明】传输门是传输系统中的重要装置。传输门具有Open(打开)、Closed(关闭)、Opening (正在打开)、StayOpen(保持打开)和Closing(正在关闭)五种状态。触发状态的转换事件有click、complete和timeout三种。事件与其相应的状态转换如下图所示。下面的Java代码1与Java代码2分别用两种不同的设计思路对传输门进行状态模拟,请填补代码中的空缺。【Java代码1】public class Door {public static final int CLOSED = 1; public static final int PENING = 2;public static final int PEN = 3; public static final int CLOSING = 4;public static final int STAYOPEN = 5; private int state = CLOSED;//定义状态变量,用不同的整数表示不同状态private void setState(int state){ this.state = state;}//设置传输门当前状态public void getState() {//此处代码省略,本方法输出状态字符串,//例如,当前状态为CLOSED时,输出字符串为"CLOSED"}public void click() { //发生click事件时进行状态转换if ((1);) setState(OPENING);else if ((2);) setState{CLOSING);else if ((3);) setState(STAYOPEN);}//发生timeout事件时进行状态转换public void timeout() { if (state == OPEN) setState(CLOSING);}public void complete() {//发生complete事件时进行状态转换if (state == OPENING) setState(OPEN);else if (state == CLOSING) setState(CLOSED);}public static void main(String [] args){Door aDoor = new Door();aDoor.getState();aDoor.click();aDoor.getState();aDoor.complete();aDoor.getState();aDoor.click();aDoor.getState();aDoor.click();aDoor.getState();return;}}【Java代码2】public class Door {public final DoorState CLOSED = new DoorClosed(this);public final DoorState PENING = new DoorOpening(this);public final DoorState PEN = new DoorOpen(this);public final DoorState CLOSING = new DoorClosing(this);public final DoorState STAYOPEN = new DoorStayOpen(this);private DoorState state = CLOSED;//设置传输门当前状态public void setState(DoorState state) { this.state=state;}public void getState(){ //根据当前状态输出对应的状态字符串System.out.println(state.getClass().getName());}public void click(){(4);}//发生click事件时进行状态转换public void timeout(){(5);}//发生timeout事件时进行状态转换public void complete(){(6);)//发生complete事件时进行状态转换public static void main(String[]args){Door aDoor = new Door();aDoor.getState();aDoor.click();aDoor.getState();aDoor.complete();aDoor.getState();aDoor.timeout();aDoor.getState();return;}}public abstract class DoorState { //定义所有状态类的基类protected Door door ;public DoorState(Door doer) { this.door = door;}public void click() {}public void complete() {}

考题 在下列方法的定义中,正确的是 ( )A.public double x(){..;return false;}B.public static int x(double y){...}C.void x(doubled){...;return d}D.public static x(double a){..}

考题 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;

考题 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;

考题 以下哪个是Java应用程序main方法的有效定义? A. public static void main();B. public static void main( String args );C. public static void main( String args[] );D. public static void main( Graphics g );E. public static boolean main( String a[] );

考题 以下程序的调试结果为?class Base{public final void amethod(){System.out.println("amethod");}}public class Fin extends Base{public static void main(String argv[]){Base b = new Base();b.amethod();}} A.编译指示带有final 方法的类自己必须定义为finalB.编译指示不能继承含有final 方法的类C.运行错误,原因是Base类没有定义为final类D.运行输出 amethod

考题 接口中的方法默认是public abstract方法,所以类在实现接口方法时必须给出方法体,并且一定要用public来修饰,而且接口中的常量默认是public static常量。() 此题为判断题(对,错)。

考题 public static final int i=10定义一个整数类型的公共常量。

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;

考题 Which declarations will allow a class to be started as a standalone program?()  A、public void main(String args[])B、public void static main(String args[])C、public static main(String[] argv)D、final public static void main(String [] array)E、public static void main(String args[])

考题 Which two are valid declarations within an interface definition?() A、 void methoda();B、 public double methoda();C、 public final double methoda();D、 static void methoda(double d1);E、 protected void methoda(double d1);

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 MAX_LENGTH是int型public成员变量,变量值保持为常量100,其定义是()。A、final public int MAX_LENGTH=100;B、public int MAX_LENGTH=100;C、public final int MAX_LENGTH=100;D、final int MAX_LENGTH=100;

考题 在接口中以下哪条定义是正确的?()A、void methoda();B、public double methoda();C、public final double methoda();D、static void methoda(double d1);E、protected void methoda(double d1);

考题 哪一行定义了一个静态变量?()A、public static int i;B、static public int i;C、public int static i;D、int public static i;

考题 MAX_LENGTH是int型public成员变量, 变量值保持为常量100,用简短语句定义这个变量。()A、 public int MAX_LENGTH=100;B、 final int MAX_LENGTH=100;C、 final public int MAX_LENGTH=100;D、 public final int MAX_LENGTH=100.

考题 定义类头时,不可以放到类名前面的关键字是()。A、public;B、abstract;C、final;D、static。

考题 下列方法定义中,方法头不正确的是()。A、public static x(double a)B、public static int x(double y)C、void x(double d)

考题 interface中定义的常量不要写public、static、final的修饰词,方法需要写public修饰词。

考题 Java语言中常量的定义是哪项?()A、 public staticB、 public static finalC、 finalD、 public static abstract

考题 判断题interface中定义的常量不要写public、static、final的修饰词,方法需要写public修饰词。A 对B 错

考题 判断题public static final int i=10定义一个整数类型的公共常量。A 对B 错

考题 单选题Java语言中常量的定义是哪项?()A  public staticB  public static finalC  finalD  public static abstract