ArrayList例题（遍历、删除和查找）

 方法1

package ArraryList;
import java.util.ArrayList;
import java.util.Collections;

public class test1 {

	public static void main(String[] args) {
		ArrayList list = new ArrayList<>();
		Collections.addAll(list,98,77,66,89,79,50,100);
		System.out.println(list);
        //因为集合数量会变化，必须从后往前遍历
		for(int i=list.size()-1;i>=0;i--) {
			if(list.get(i)<80) {
				list.remove(i);
			}
		}
		System.out.println(list);
	}
}

方法2

package ArraryList;
import java.util.ArrayList;
import java.util.Collections;

public class test1 {

	public static void main(String[] args) {
		ArrayList list = new ArrayList<>();
		Collections.addAll(list,98,77,66,89,79,50,100);
		System.out.println(list);
		for(int i = 0;i 
运行结果
 
 
例题2 
对集合实现查找的功能（通过电影名查找电影信息）
 
package ArraryList;
import java.util.ArrayList;
import java.util.Scanner;
import java.util.Collections;
import java.util.List;
public class MovieMain {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		ArrayList list = new ArrayList<>();
		Movie m1 = new Movie("肖申克的救赎",9.8,"蒂姆·罗宾斯");
		Movie m2 = new Movie("霸王别姬",9.8,"张国荣、张丰毅");
		Movie m3 = new Movie("阿甘正传",9.8,"张国荣、张丰毅");
		Collections.addAll(list,m1,m2,m3);
		//遍历集合的内容
		for(int i=0;i list,String search) {

		Movie temp = list.get(0);	
		for(int i=0;i 
 Movie类
 
package ArraryList;

public class Movie {
	private String name;
	private double score;
	private String actor;
	
	public Movie() {
		// TODO 自动生成的构造函数存根
	}

	public Movie(String name, double score, String actor) {
		super();
		this.name = name;
		this.score = score;
		this.actor = actor;
	}

	public String getName() {
		return name;
	}

	public double getScore() {
		return score;
	}

	public String getActor() {
		return actor;
	}

	public void setName(String name) {
		this.name = name;
	}

	public void setScore(double score) {
		this.score = score;
	}

	public void setActor(String actor) {
		this.actor = actor;
	}
}
 
运行结果