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1、.java 程序设计 编程 实例 大全 深入 二public class ArrayCopypublic static void main(String args)int a = new int1,2,3,4;int b = new int4;System.arraycopy(a,0,b,0,4);for(int i = 0;i arrayj+1)int temp = arrayj;arrayj = arrayj+1;arrayj+1 = temp;System.out.println(第 + (i + 1) + 趟排序：);for(int k = 0;karray.length;k+)Sys
2、tem.out.print(arrayk + );.System.out.println();public static void main(String args)int array = 11,10,9,8,7,6,5,4,3,2,1,0,-1,-2,-3;bubbleSort(array);/C.java 文件package com.shengsiyuan;public class Cprotected int year=2012;/D.java 文件package com.shengsiyuan.test;import com.shengsiyuan.C;public class D e
3、xtends Cpublic void output().System.out.println(year);public static void main(String args)D d=new D();d.output();public class FinalTest3public static void main(String args)People people = new People();/people.age = 20;/people.address =new Address();people.address.name = Shanghai;class People/final i
4、n age = 10;.final Address address = new Address();class AddressString name = beijing;import com.shengsiyuan.test.PackageTest1;public class ImportTestpublic static void main(String args)System.out.println(PackageTest1.i);public class InstanceofTestpublic static void main(String args)People people1=ne
5、w People();System.out.println(people1 instanceof People);People people2=new Man();.System.out.println(people2 instanceof People);class Peopleclass Man extends Peoplepublic class IntegerTestpublic static void main(String args)int a = 10;Integer integer = new Integer(a);int b = integer.intValue();Syst
6、em.out.println(a = b);System.out.println(-);System.out.println(b);.public class ObjectTestpublic static void main(String args)Object object=new Object();System.out.println(object);System.out.println(object.toString();String str=aaa;System.out.println(str);System.out.println(str.toString();Student st
7、udent=new Student();System.out.println(student);System.out.println(student.toString();class Student extends Objectpublic String toString()return hello world;.public class ObjectTest2public static void main(String args)Object o1 = new Object();Object o2 = new Object();System.out.println(o1 = o2);Syst
8、em.out.println(-);String str = new String(aaa);String str2 = new String(aaa);System.out.println(str = str2);System.out.println(-);.String str3 = bbb;String str4 = bbb;System.out.println(str3 = str4);System.out.println(-);String str5 = new String(ccc);String str6 = ccc;System.out.println(str5 = str6)
9、;System.out.println(-);String s = hello;String s1 = hel;String s2 = lo;.System.out.println(s = s1 + s2);System.out.println(-);System.out.println(s = s1 + s2);package com.shengsiyuan;public class PackageTestpublic static void main(String args)System.out.println(hello world);package com.shengsiyuan.te
10、st;public class PackageTest1public static int i=100;.public class PolyTest1public static void main(String args)Rose rose = new Rose();rose.sing();System.out.println(-);Flower rose1 = new Rose();rose1.sing();class Flowerpublic void sing()System.out.println(flower is singing);class Rose extends Flower
11、.public void sing()System.out.println(rose is singing);public class PolyTest2public static void main(String args)Parent1 parent = new Parent1();parent.sing();Child1 child = new Child1();child.sing();/*Parent1 p = new Child1();.p.sing();*/class Parent1public void sing()System.out.println(parent is si
12、nging);class Child1 extends Parent1public void sing()System.out.println(child is singing);public class PolyTest3.public static void main(String args)Animal a = new Dog();Dog dog = (Dog)a;dog.sing();Animal b = new Cat();Cat cat = (Cat)b;cat.sing();/*Animal a1 = new Cat();Animal a2 = new Animal();a1 =
13、 a2;a1.sing();*/*.Cat cat = new Cat();Animal animal = cat;animal.sing();*/*Animal animal = new Animal();animal.sing();*/*Cat cat = new Cat();Animal animal = (Animal)cat; /(Animal)可以省略animal.sing();Animal a = new Cat();Cat cat =(Cat)a;cat.sing();*/.class Animalpublic void sing()System.out.println(ani
14、mal is singing);class Dog extends Animalpublic void sing()System.out.println(dog is singing);class Cat extends Animalpublic void sing().System.out.println(cat is singing);public class PolyTest4public static void main(String args)Fruit f = new Pear();f.run();Pear p = new Pear();p.run();System.out.pri
15、ntln(-);Fruit f1 = new Pear();Pear p1 = (Pear)f1;p1.grow();class Fruitpublic void run().System.out.println(fruit is run);class Pear extends Fruitpublic void run()System.out.println(pear is run);public void grow()System.out.println(pear is grow);public class PolyTest5public static void main(String args)A a = null;if(args0.equals
