阅读下列代码 public class Test 2005{ public static void main(String args[]){ System.out.println(~(0xa5)0xaA.0xa5B.10C.0x50D.0xaa
阅读下列代码 public class Test 2005{ public static void main(String args[]){ System.out.println(~(0xa5)&0xa
A.0xa5
B.10
C.0x50
D.0xaa
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( 19 )阅读下列代码public class Test2005{public static void main(String args[]){String s= ″ Test ″ ;Switch(s){case ″ Java ″ : System.out.print( ″ Java ″ ) ;break ;case ″ Language ″ : System.out.print( ″ Language ″ ) ;break ;case ″ Test ″ : System.out.print( ″ Test ″ ) ;break ;}}}其运行结果是A ) JavaB ) LanguageC ) TestD )编译出错
请阅读下面的程序classTest/{privatestaticStringname;static/{name="World";System.out.print(name);/}publicstaticvoidmain(String[]args)/{System.out.print("Hello");Testtest=newTest();/}/}下列选项中,程序运行结果是()。:A.WorldB.HelloC.World HelloD.Hello World
staticvoidtest()throwsRuntimeException{try{System.out.print(”test);thrownewRuntimeException();}catch(Exceptionex){System.out.print(”exception);}}publicstaticvoidmain(String[]args){try{test();}catch(RuntimeExceptionex){System.out.print(”runtime);}System.out.print(”end);}Whatistheresult?()A.testendB.Compilationfails.C.testruntimeendD.testexceptionendE.AThrowableisthrownbymainatruntime.
staticvoidtest()throwsError{if(true)thrownewAssertionError();System.out.print(”test);}publicstaticvoidmain(String[]args){try{test();}catch(Exceptionex){System.out.print(”exception);}System.out.print(”elld);}Whatistheresult?()A.endB.Compilationfails.C.exceptionendD.exceptiontestendE.AThrowableisthrownbymain.F.AnExceptionisthrownbymain.
阅读下列代码 public class Test2005 { public static void main(String args[]){ String s="Test"; switch (s){ case "Java": System.out.print("Java"); break; case "Language": System.out.print("Language"); break; case "Test": System.out.print("Test"); break; } } } 其运行结果是( )。A.JavaB.LanguageC.TestD.编译出错
阅读下列代码 public class Test2005{ public static void main(String args[]){ String s="Test"; switch(s){ case"Java":System.out.print("Java"); break; case"Language":System.out.print("Lan- guage"); break; case"Test":System.out.print("Test"); break; } } } 其运行结果是( )。A.JavaB.LanguageC.TestD.编译时出错
阅读以下说明和Java程序,填写程序中的空(1)~(6),将解答写入答题纸的对应栏内。【说明】以下Java代码实现一个简单绘图工具,绘制不同形状以及不同颜色的图形。部分接口、类及其关系如图5-1所示。【Java代码】interface?DrawCircle?{? //绘制圆形 public(1) ;}class?RedCircle?implements?DrawCircle?{? ?//绘制红色圆形???????public?void?drawCircle(int?radius,intx,?int?y)??{????????????System.out.println("Drawing?Circle[red,radius:"?+?radius?+",x:"?+?x?+?",y:"?+y+?"]");???????}}class?GreenCircle?implements?DrawCircle?{????//绘制绿色圆形??????public?void?drawCircle(int?radius,?int?x,int?y)?{???????????System.out.println("Drawing?Circle[green,radius:"?+radius+",x:?"?+x+?",y:?"?+y+?"]");??????}}abstract?class?Shape?{????//形状? protected? ? (2)???;? ? public?Shape(DrawCircle?drawCircle)?{? ?this.drawCircle=?drawCircle;? ? ? public?abstract?void?draw();}class?Circle?extends?Shape?{? //圆形? ?private?int?x,y,radius;? public?Circle(int?x,int?y,intradius,DrawCircle?drawCircle)?{? ?(3)???;? this.x?=?x;? ? ? this.y?=?y;? ?this.radius?=radius;? }? ? ?public?void?draw()?{? ? drawCircle.? ?(4)? ?;? ? ? }}public?class?DrawCircleMain?{? public?static?void?main(String[]?args)?{? Shape?redCircle=new?Circle(?100,100,10,? (5) );//绘制红色圆形? Shape?greenCircle=new?Circle(200,200,10,(6) );//绘制绿色圆形? ?redCircle.draw(); greenCircle.draw();? ?}}
阅读下列说明和C++代码,填写程序中的空(1)~(6),将解答写入答题纸的对应栏内。【说明】以下C++代码实现一个简单绘图工具,绘制不同形状以及不同颜色的图形。部分类及其关系如图6-1所示。【C++代码】#include?#include?using?namespace?std;class?DrawCircle?{??????//绘制圆形,抽象类? ? ? public: (1);//定义参数为?int?radius,?int?x,?inty? ?virtual~DrawCircle()?{?}};class?RedCircle:public?DrawCircle?{????//绘制红色圆形? ? ? ? public: void?drawCircle(intradius,?int?x,?int?y)?{cout??drawCircle?=?drawCircle;? }? ?virtual~shape()?{?}? public:? ?virtual?void?draw()?=?0;};class?Circle:public?Shape?{????//圆形? ? private:? ? ?int?x,y,radius;? ? public:? Circle(int?x,inty,int?radius,DrawCircle?*drawCircle)? (3)? {? this->x?=?x;? ?this->y?=?y;? ? this->radius?=?radius; }? ? ? public:? void?draw(){? drawCircle?-> (4); }};int?main(){Shape?*redCirclenew?Circle(100,100,10,????(5)????);//绘制红色圆形? Shape?*greenCircle=new?Circle(100,100,10, (6)??);//绘制绿色圆形redCircle >draw();? ?greenCircle?->draw();? ?return?0;}
阅读下列代码,选出该代码段正确的文件名()。 class A{ void method1(){ System.out.println("Method1 in class A"); } } public class B{ void method2(){ System.out.println("Method2 in class B"); } public static void main(String[] args){ System.out.println("main() in class B"); } }A.javaB.A.classC.B.javaD.B.class
以下代码程序运行后输出结果为 public class Main { public Main() { System.out.print("main "); } public Main(String s) { this(); System.out.print("main with "+s); } public static void main(String[] args) { Main main = new Main("wow"); } }A.main with main wowB.main main with wowC.main main with wowD.main with wow main