集合与方法的合并

import java.util.ArrayList;

class People {
    private String name;
    private int age;

    public People(String string, int i) {
        // TODO Auto-generated constructor stub
    }

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "People [name=" + name + ", age=" + age + "]";
    }

}

public class JiHeDemo {
    public static void main(String[] args) {
        People p = new People("lisio", 48);
        p.setName("lishuai");
        p.setAge(18);
        ArrayList al = new ArrayList();
        al.add(p);
        al.add(new People("zhangsan", 22));
        System.out.println(al);
    }

    @Override
    public String toString() {
        return "JiHeDemo [getClass()=" + getClass() + ", hashCode()=" + hashCode() + ", toString()=" + super.toString()
                + "]";
    }
}

eclipse中的source帮我写好了set get toString方法，我只需要创建对象，赋值，将对象放到集合中即可。