1月21日 - ArrayList 练习

import java.util.ArrayList;

public class LXArrayList {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根

        
        ArrayList<Integer> l = new ArrayList<Integer>();
        
        l.add(123);
        
        l.add(456);
        
        l.add(789);
        
        for(int i = 0; i < 11; i++)
        {
            l.add(i);
        }
            
        System.out.println("列表中的元素有：" + l);
        
        
        System.out.print("列表中的元素有：");
        
        for(int t : l)
        {
            System.out.print(" " + t);
        }
        
        System.out.print("\r" +"列表中的元素有：");
        
        for(int i = 0; i < l.size();i++)
        {
            System.out.print(l.get(i) + " ");
        }
        
        
        ArrayList<Shu> sz = new ArrayList<Shu>();
        
        sz.add(new Shu("樟树",15,20.5));
        
        Shu ys = new Shu();
        
        ys.setShuMIng("杨树");
        
        ys.setGaoDu(13);
        
        ys.setKuanDu(15.3);
        
        sz.add(ys);
        
        System.out.println();
        
        for (int i = 0; i < sz.size();i++)
        {
            System.out.println(sz.get(i));
        }
        
        /* 输出结果如下：
        列表中的元素有：[123, 456, 789, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
        列表中的元素有： 123 456 789 0 1 2 3 4 5 6 7 8 9 10
        列表中的元素有：123 456 789 0 1 2 3 4 5 6 7 8 9 10 
        Shu [shuMIng=樟树, gaoDu=15, kuanDu=20.5]
        Shu [shuMIng=杨树, gaoDu=13, kuanDu=15.3]
        */

        
        
    }

}

 

 

public class Shu {
    
    
    
    
    
    public Shu() 
    {
        super();
    }

    public Shu(String shuMIng, int gaoDu, double kuanDu) 
    {
        super();
        
        this.shuMIng = shuMIng;
        
        this.gaoDu = gaoDu;
        
        this.kuanDu = kuanDu;
    }
    
    private String shuMIng;
    
    private int gaoDu;
    
    private double kuanDu;


    public String getShuMIng() {
        return shuMIng;
    }

    public void setShuMIng(String shuMIng) {
        this.shuMIng = shuMIng;
    }

    public int getGaoDu() {
        return gaoDu;
    }

    public void setGaoDu(int gaoDu) {
        this.gaoDu = gaoDu;
    }

    public double getKuanDu() {
        return kuanDu;
    }

    public void setKuanDu(double kuanDu) {
        this.kuanDu = kuanDu;
    }

    @Override
    public String toString() {
        return "Shu [shuMIng=" + shuMIng + ", gaoDu=" + gaoDu + ", kuanDu=" + kuanDu + "]";
    }
    
    

    
}