Java程序语言试卷(A).doc

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1、Java程序语言试卷(A)答题卡：一题:1.___________________________________________________________2.___________________________________________________________3.___________________________________________________________4.___________________________________________________________5._______

2、____________________________________________________6.___________________________________________________________二题：位置号①②③④⑤答案位置号⑥⑦⑧⑨⑩答案三题：(R为正确,E为错误)题号（1）（2）（3）（4）（5）答案题号（6）（7）（8）（9）（10）答案题号（11）（12）（13）（14）（15）答案题号（16）（17）（18）（19）（20）答案四题:1._______________________________

3、____________________________2.___________________________________________________________3.___________________________________________________________4.___________________________________________________________5.___________________________________________________________五

4、题：一、阅读JAVA程序，写出运行结果。(30分，每小题5分)1、publicclassko5_2{publicstaticvoidmain(Stringargs[]){intx=20,y=30;if(x>0)if(x

5、tt,z=10;t=sum(z);System.out.println("sum="+t);}staticintsum(intx){if(x==1)return(1);elsereturn(sum(x-1)*x);}}请给出运行结果___________________________3、interfaceko6_7interface{floatx=30.5f;floaty=4.6f;floattotal();}publicclassko6_7implementsko6_7interface{floatdollar,money;ko6_7(

6、floata,floatb){dollar=a;money=b;}publicfloattotal(){returnx*dollar+money/y;}publicstaticvoidmain(Stringargs[]){ko6_7z=newko6_7(100,4600);System.out.print("美金="+z.dollar);System.out.print("人民币="+z.money);System.out.print("折合台币="+z.total());}}请给出运行结果_________________________

7、__4、classkoA{staticinta;publicvoiddisplay(){System.out.print(“a=”+a);}}classko13{publicstaticvoidmain(Stringargs[]){koAa1=newkoA;a1.a=10;koAa2=newkoA;a2.a=20;koA.a=50;a1.dispay();a2.display();}}请给出运行结果___________________________5、classA{voidcallme(){System.out.println(“Ins

8、ideA’scallme()method”);}}classBextendsA{voidcallme(){System.out.println(“InsideB’scallme(