基礎(chǔ)第一階段考試試題有答案

姓名 黃藝javajava_home過多，不易于開發(fā)者的使用，配置classpath文件能使得開發(fā)者不用到class文件的所在目錄下才能運(yùn)行class文件。doublea=1/3;System.out.println(a); 結(jié)果分析和解釋：13inta，adouble，intdoubleinta=intb=System.out.println(：a="+ab="+binttemp=a;a=b=System.out.println("交換之后：a="+a+",b="+binta=1;intb=System.out.println("交換之前：a="+a+",b="+ba=a+b=a–a= -System.out.println("交換之后：a="+a+",b="+binta=1;intb=System.out.println("交換之前：a="+a+",b="+ba=a^b=a^b;a=a^System.out.println("交換之后：a="+a+",b="+bintanewint[]{34,4,56,12,2}進(jìn)行降序排publicstaticint[]sort(int[]a{for(inti=0;i<a.length-1;{for(intj=i+1;j<a.length;{if(a[j]>{inttemp=a[i];a[i]=a[j];a[j]=}}}return}classCar{publicStringcolor;publicStringfuel;//定義燃料類型publicfloatgas;//燃?xì)鈖ublicdoubleoil;//publicCar(){}publicCar(Stringbrand,Stringcolor,Stringfuel,floatgas,doubleoil){this.brand=brand;this.fuel=fuel;this.gas=gas;this.oil=oil;}publicvoidrun(Stringfuel, gas){if(gas>0.0f{System.out.println("汽車使用fuel高速行駛起來了...現(xiàn)在還剩"+gas+"升燃?xì)?);}}publicvoidrun(Stringfuel,doubleoil){if(oil>0.0{System.out.println("汽車使用fuel高速行駛起來了...現(xiàn)在還剩"+oil+"升燃油");}}}abstractclass{publicStringname;publicStringcolor;}publicAnimal(Stringname,Stringcolor){=name;this.color=color;}publicabstractvoid}classBirdextends{}publicBird(Stringname,Stringcolor){super(name,color}publicvoidSystem.out.println(colorname}}classCrowextends{}publicCrow(Stringname,Stringcolor){super(name,color}}-6的補(bǔ)碼 0111-6的補(bǔ)碼：-0000- （正數(shù)的補(bǔ)碼等于原碼計算結(jié)果 0111- （補(bǔ)碼class{publicintstatistics(inta){inttemp=0;for(inti=0;i<=a;i++{if(i%2==1)}return}} A B C D classGrade{publicvoidgrade(a){if(a>=90&&a<=elseif(a>=80&&a<=89)elseif(a>=70&&a<=79)elseif(a>=60&&a<=69)elseif(a>=0 &&a<=59)}classDiv{publicvoiddiv(inta,intb)throwsDivCalculateException{if(b==0){thrownewDivCalculateException("除數(shù)異常}System.out.println("a/b="+a/b}}classDivCalculateExceptionextends{public}message){super(message);}}class{publicstaticvoidmain(String[]args{{}

Divd=newDiv();d.div(4,0);catch(DivCalculateExceptione{}}}思考1：編寫一個功能函數(shù)，該函數(shù)要具備計算小數(shù)二進(jìn)制字符序列的功能。class{privateStringskin;privatestaticfinalStringbookname西游記","水滸傳","封神演義","紅樓夢","三國演義","新華字典"};privatestaticlongadd=}privatestaticBookManagebook=newpublicstaticBookManagegetBookManage(){System.out.println(歡迎使用圖書管理系統(tǒng),您是當(dāng)前第：add戶return}publicvoidsetSkin(Stringskin){this.skin=skin;}publicgetSkin(){return}publicvoidgetBookName(){for(in