java语言程序设计基础篇英文8版课后习题答案Word文档下载推荐.docx

java语言程序设计基础篇英文8版课后习题答案Word文档下载推荐.docx

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41664"

publicclassExercise1_6{

System.out.println（1+2+3+4+5+6+7+8+9）;

publicclassExercise1_8{

//Displayarea

System.out.println（5.5*5.5*3.14159）;

//Displayperimeter

System.out.println（2*5.5*3.14159）;

importjavax.swing.JOptionPane;

publicclassExercise2_1WithDialogBox{

//Mainmethod

//EnteratemperaturinFahrenheit

StringcelsiusString=JOptionPane.showInputDialog（null,

"

EnteratemperatureinCelsius:

"

Exercise2_1Input"

JOptionPane.QUESTION_MESSAGE）;

//Convertstringtodouble

doublecelsius=Double.parseDouble（celsiusString）;

//ConvertittoCelsius

doublefahrenheit=（9.0/5）*celsius+32;

//Displaytheresult

JOptionPane.showMessageDialog（null,"

Thetemperatureis"

+

fahrenheit+"

inFahrenheit"

importjava.util.Scanner;

publicclassExercise2_2{

Scannerinput=newScanner（System.in）;

//Enterradiusofthecylinder

System.out.print（"

Enterradiusofthecylinder:

doubleradius=input.nextDouble（）;

//Enterlengthofthecylinder

Enterlengthofthecylinder:

doublelength=input.nextDouble（）;

doublevolume=radius*radius*3.14159*length;

Thevolumeofthecylinderis"

+volume）;

publicclassExercise2_4{

//Prompttheinput

java.util.Scannerinput=newjava.util.Scanner（System.in）;

Enteranumberinpounds:

doublepounds=input.nextDouble（）;

doublekilograms=pounds*0.454;

System.out.println（pounds+"

poundsis"

+kilograms+"

kilograms"

//Exercise2_6.java:

Summarizealldigitsinaninteger<

1000

publicclassExercise2_6{

//Readanumber

Enteranintegerbetween0and1000:

intnumber=input.nextInt（）;

//Findalldigitsinnumber

intlastDigit=number%10;

intremainingNumber=number/10;

intsecondLastDigit=remainingNumber%10;

remainingNumber=remainingNumber/10;

intthirdLastDigit=remainingNumber%10;

//Obtainthesumofalldigits

intsum=lastDigit+secondLastDigit+thirdLastDigit;

//Displayresults

Thesumofalldigitsin"

+number

+"

is"

+sum）;

publicclassExercise2_8{

publicstaticvoidmain（Stringargs[]）{

//EnteranASCIIcode

EnteranASCIIcode:

intcode=input.nextInt（）;

//Displayresult

ThecharacterforASCIIcode"

+code+"

+（char）code）;

publicclassExercise2_10{

/**Mainmethod*/

//Receivetheamountenteredfromthekeyboard

Enteranamountindouble,forexample11.56"

doubleamount=input.nextDouble（）;

intremainingAmount=（int）（amount*100）;

//Findthenumberofonedollars

intnumberOfOneDollars=remainingAmount/100;

remainingAmount=remainingAmount%100;

//Findthenumberofquartersintheremainingamount

intnumberOfQuarters=remainingAmount/25;

remainingAmount=remainingAmount%25;

//Findthenumberofdimesintheremainingamount

intnumberOfDimes=remainingAmount/10;

remainingAmount=remainingAmount%10;

//Findthenumberofnickelsintheremainingamount

intnumberOfNickels=remainingAmount/5;

remainingAmount=remainingAmount%5;

//Findthenumberofpenniesintheremainingamount

intnumberOfPennies=remainingAmount;

Stringoutput="

Youramount"

+amount+"

consistsof\n"

numberOfOneDollars+"

dollars\n"

numberOfQuarters+"

quarters\n"

numberOfDimes+"

dimes\n"

numberOfNickels+"

nickels\n"

numberOfPennies+"

pennies"

;

System.out.println（output）;

publicclassExercise2_12a{

//Obtaininput

StringbalanceString=JOptionPane.showInputDialog（null,

Enterbalance:

double