JAVA编程思想课后习题答案资料Word文档下载推荐.docx

1、 ATypeName a = new ATypeName（）; a.i = 3; a.d = 2.71828; a.b = false; a.show（）;练习4：public class DataOnlyTest class DataOnly DataOnly data = new DataOnly（）; data.i = 3; data.d = 2.71828; data.b = false; data.show（）;练习5：public class DOTest2 data.i = 234; data.d = 2.1234545; data.b = true;练习6：public cla

2、ss StorageTest class StoreStuff int storage（String s） return s.length（） * 2; StoreStuff x = new StoreStuff（）; System.out.println（x.storage（hi）;练习7：class StaticTest static int i = 47;class Incrementable static void increment（） StaticTest.i+;public class ITest System.out.println（StaticTest.i= + Static

3、Test.i）; StaticTest st1 = new StaticTest（）; StaticTest st2 = new StaticTest（）;st1.i= + st1.i）;st2.i= + st2.i）; Incrementable sf = new Incrementable（）; sf.increment（）;After sf.increment（） called: st1.i = st2.i = Incrementable.increment（）;After Incrementable.increment called:练习8：public class OneStatic

4、Test StaticTest st1 = new StaticTest（）; StaticTest st2 = new StaticTest（）; Incrementable.increment（）;After Incrementable.increment（） called: st1.i = 3;After st1.i = 3, Create another StaticTest, st3. StaticTest st3 = new StaticTest（）;st3.i = + st3.i）;练习9：public class AutoboxTest boolean b = false; c

5、har c = x; byte t = 8; short s = 16; int i = 32; long l = 64; float f = 0.32f; double d = 0.64; Boolean B = b;boolean b = + b）; Boolean B = + B）; Character C = c;char c = Character C = + C）; Byte T = t;byte t = + t）;Byte T = + T）; Short S = s;short s = + s）;Short S = + S）; Integer I = i;int i = Inte

6、ger I = + I）; Long L = l;long l = + l）;Long L = + L）; Float F = f;float f = + f）;Float F = + F）; Double D = d;double d = + d）;Double D = + D）;练习10：public class CommandArgTest args0 = + args0）;args1 = + args1）;args2 = + args2）;练习11：public class Rainbow AllTheColorsOfTheRainbow atc = new AllTheColorsO

7、fTheRainbow（）;atc.anIntegerRepresentingColors = + atc.anIntegerRepresentingColors）; atc.changeColor（7）; atc.changeTheHueOfTheColor（77）;After color change, atc.anIntegerRepresentingColors = atc.hue = + atc.hue）;class AllTheColorsOfTheRainbow int anIntegerRepresentingColors = 0; int hue = 0; void chan

8、geTheHueOfTheColor（int newHue） hue = newHue; int changeColor（int newColor） return anIntegerRepresentingColors = newColor;练习12：public class DocTest /* Entry poing to class & application. * param args array of string arguments * throws exceptions No exceptions thrown */Hello, its: System.out.println（n

9、ew Date（）;练习13-1：public class Documentation1 /* A field comment */ public int i; /* A method comment */ public void f（） 2：public class Documentation2 Date d = new Date（）; void showDate（） Date = 3：public class Documentation3 Date d = new Date（）;d = 练习14：public class Documentation4 public int i = 2;pr

10、ivate int j = 3;public static void main（String args） Date d = new Date（）;练习15：public class HelloDocTest 练习16：class Tree int height; Tree（） Planting a seedling height = 0;Tree（int initialHeight） height = initialHeight;Creating new tree that is + height + feet tallvoid info（） Tree is void info（String

11、s） System.out.println（s + : Tree is public class Overloading for（int i = 0; i 5; i+） Tree t = new Tree（i）; t.info（）; t.info（overloading method / Overloaded constructor: new Tree（）;第三章public class PrintTest print（Hello, from short form. P.rintln（Hello from greggordon form.Hello from long form.class T

12、ube float level;public class Assign Tube t1 = new Tube（）; Tube t2 = new Tube（）; t1.level = 0.9f; t2.level = 0.47f;1: t1.level: + t1.level + , t2.level: + t2.level）; t1 = t2;2: t1.level = 0.27f;3:class Box float a;public class PassObject2 static void f（Box y） y.a = 2.71828f; Box x = new Box（）; x.a =

13、3.1416f; x.a = + x.a）; f（x）;class VelocityCalculator static float velocity （float d, float t） if（t = 0） return 0f; else return d/t; public class VelocityTester float d = 565.3f; float t = 3.6f;Distance:Time: float v = VelocityCalculator.velocity（d, t）;Velocity: + v）;class Dog String name; String say

14、s; void setName（String n） name = n; void setSays（String s） says = s; void showName（） P.rintln（name）; void speak（） P.rintln（says）;public class DogTest Dog spot = new Dog（）; spot.setName（Spot spot.setSays（Ruff! Dog scruffy = new Dog（）; scruffy.setName（Scruffy scruffy.setSays（Wurf! spot.showName（）; spo

15、t.speak（）; scruffy.showName（）; scruffy.speak（）;public class DogCompare Dog butch = new Dog（）; butch.setName（Butch butch.setSays（Hello! butch.showName（）; butch.speak（）;Comparison:spot = butch: + （spot = butch）;spot.equals（butch）: + spot.equals（butch）;butch.equals（spot）: + butch.equals（spot）;Now assign: spot = butch spot = butch;Compare again: + （spot =