package net.mindview.holding.test1;
import java.util.ArrayList;
import java.util.List;
/**
* 沙鼠
* @author samsung
*
*/
public class Gerbil {
static int counter;
int gerbilNumber;
public Gerbil(){
this.gerbilNumber = counter ++;
}
public String hop(){
return "沙鼠的号码:"+gerbilNumber + ",正在跳跃";
}
public static void main(String[] args) {
List<Gerbil> list = new ArrayList<Gerbil>();
list.add(new Gerbil());
list.add(new Gerbil());
list.add(new Gerbil());
list.add(new Gerbil());
for(Gerbil g: list){
System.out.println(g.hop());
}
}
}
package net.mindview.holding.test2;
import java.util.HashSet;
import java.util.Set;
public class SimpleCollection {
public static void main(String[] args) {
Set<Integer> c = new HashSet<Integer>();
for(int i = 0; i < 10; i++){
c.add(i);
}
for(Integer i: c){
System.out.print(i + ",");
}
}
}
package net.mindview.holding.test3;
import java.util.ArrayList;
import java.util.List;
/**
* 选择器
*/
interface Selector {
//是否结束
boolean end();
//当前
Object current();
//下一个
void next();
}
/**
* 顺序
*/
public class Sequence {
//数组是有限制的,而集合时无限制的.
//private Object[] items;
private List<Object> items;
private int next = 0;
//定义数组的个数
public Sequence(){
items = new ArrayList<Object>();
}
//添加
public void add(Object x){
items.add(x);
}
//内部类--顺序选择器
private class SequenceSelector implements Selector {
//选择器最开始指向第一个元素
private int i = 0;
@Override
public boolean end() {
return i == (items.size());
}
/**
* 新增方法: 在内部类中引用外部类
*/
public Sequence outer(){
return Sequence.this;
}
@Override
public Object current() {
return items.get(i);
}
@Override
public void next() {
if(i<items.size()){
i++;
}
}
}
public Selector selector() {
return new SequenceSelector();
}
public static void main(String[] args) {
Sequence s = new Sequence();
for(int i=0; i<10; i++){
s.add("对象"+i);
}
Selector selector = s.selector();
while(!selector.end()){
System.out.print(selector.current());
selector.next();
}
}
}
[Snow White, Star Wars, White Princple, Dream, My Mother]
[The Forest, My Grandpa, Snow White, Star Wars, White Princple]
[Dream, My Mother, The Forest, My Grandpa, Snow White]
[My Mother, Star Wars, The Forest, Dream, White Princple]
[My Grandpa, Snow White, Star Wars, White Princple, Dream]
[My Grandpa, My Mother, Snow White, Star Wars, The Forest]
package net.mindview.holding.test4;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.TreeSet;
class MoiveNameGenerator {
String[] moives = {"Snow White", "Star Wars", "White Princple", "Dream","My Mother", "The Forest", "My Grandpa"};
int next;
public String next(){
String moive = moives[next];
//电影名用完之后, 循环到这个字符列表的开始处
next = (next+1) % moives.length;
return moive;
}
}
public class MoiveGenerator {
MoiveNameGenerator moiveNameGenerator = new MoiveNameGenerator();
public String[] fill(String[] arr){
for(int i=0; i<arr.length; i++){
arr[i] = moiveNameGenerator.next();
}
return arr;
}
public Collection fill(Collection col){
for(int i=0; i<5; i++){
col.add(moiveNameGenerator.next());
}
return col;
}
public static void main(String[] args) {
MoiveGenerator moiveGenerator = new MoiveGenerator();
System.out.println(Arrays.toString(moiveGenerator.fill(new String[5])));
System.out.println(moiveGenerator.fill(new ArrayList<String>()));
System.out.println(moiveGenerator.fill(new LinkedList<String>()));
System.out.println(moiveGenerator.fill(new HashSet<String>()));
System.out.println(moiveGenerator.fill(new LinkedHashSet<String>()));
System.out.println(moiveGenerator.fill(new TreeSet<String>()));
}
}
package net.mindview.holding;
import java.util.LinkedList;
/**
* 模拟栈
*/
public class Stack<T> {
private LinkedList<T> storage = new LinkedList<T>();
//推入
public void push(T v){
storage.addFirst(v);
}
public T peek(){
return storage.getFirst();
}
//取出
public T pop(){
return storage.removeFirst();
}
public boolean empty(){
return storage.isEmpty();
}
public String toString(){
return storage.toString();
}
}
package net.mindview.holding;
import java.util.LinkedList;
/**
* 模拟栈
*/
public class Stack<T> {
private LinkedList<T> storage = new LinkedList<T>();
//推入
public void push(T v){
storage.addFirst(v);
}
public T peek(){
return storage.getFirst();
}
//取出
public T pop(){
return storage.removeFirst();
}
public boolean empty(){
return storage.isEmpty();
}
public String toString(){
return storage.toString();
}
}
package net.mindview.holding.test27;
import java.util.LinkedList;
import java.util.Queue;
//消息
class Command {
String str;
public Command(String str){
this.str = str;
}
public void operation(){
System.out.println(str);
}
}
//生产者
class Producter{
//生产者生成消息
public Queue<Command> produce(Queue<Command> qc){
qc.offer(new Command("A"));
qc.offer(new Command("AB"));
qc.offer(new Command("ABC"));
qc.offer(new Command("VFA"));
qc.offer(new Command("SDA"));
return qc;
}
}
//消费者
class Customer {
//消费者消费消息
public void custom(Queue<Command> queue){
while(queue.peek() != null){
queue.remove().operation();
}
}
}
public class Test27 {
public static void main(String[] args) {
Queue<Command> qc = new LinkedList<Command>();
Producter producter = new Producter();
Queue<Command> qcc = producter.produce(qc);
new Customer().custom(qcc);
}
}
package net.mindview.holding.test31;
import java.util.Iterator;
import java.util.Random;
//形状
class Shape {
public void draw() {
}
public void erase() {
}
}
// 圆形
class Cycle1 extends Shape {
@Override
public void draw() {
System.out.println("draw cycle");
}
@Override
public void erase() {
System.out.println("erase cycle");
}
}
class Square extends Shape {
@Override
public void draw() {
System.out.println("draw Square");
}
@Override
public void erase() {
System.out.println("draw Square");
}
}
// 矩形
class Triangle extends Shape {
@Override
public void draw() {
System.out.println("draw Triangle");
}
@Override
public void erase() {
System.out.println("draw Triangle");
}
}
// 梯形
class Trapezoid extends Shape {
@Override
public void draw() {
System.out.println("draw Trapezoid");
}
@Override
public void erase() {
System.out.println("draw Trapezoid");
}
}
class RandomShapeFactory implements Iterable<Shape> {
Random random = new Random(47);
private final int quantity;
public RandomShapeFactory(int quantity) {
this.quantity= quantity;
}
// 下面画什么形状呢
public Shape nextShape() {
switch (random.nextInt(4)) {
default:
case 0:
return new Cycle1();
case 1:
return new Square();
case 2:
return new Triangle();
case 3:
return new Trapezoid();
}
}
@Override
public Iterator<Shape> iterator() {
return new Iterator<Shape>() {
private int count = 0;
@Override
public boolean hasNext() {
return count < quantity;
}
@Override
public Shape next() {
++count;
return nextShape();
}
@Override
public void remove() {
}
};
}
}
public class Shapes {
public static void main(String[] args) {
RandomShapeFactory rd = new RandomShapeFactory(9);
for (Shape s : rd) {
System.out.println(s.getClass().getSimpleName());
}
}
}