认识Arrays（一）打印

Arrays提供了一组操作array的静态方法。

一、基本类型数组打印

	public static void printBaseArray(){
		int[] ar = new int[10];

	    for (int i=0; i < ar.length; i++) {
	      ar[i] = (1000 - (300 + i));
	    }
	    System.out.println("打印基本类型数组:"+Arrays.toString(ar));
	}

 输出结果：

打印基本类型数组:[700, 699, 698, 697, 696, 695, 694, 693, 692, 691]

 二、对象类型数组打印

	public static void printObjectArray(){
		Random random = new Random();
		Cell[] cells = new Cell[10];
		for(int i=0;i<10;i++){
			cells[i] = new Cell(random.nextInt(50),random.nextInt(50));
			
		}
		System.out.println("打印对象类型数组:"+Arrays.toString(cells));
	}

public class Cell {
	private int x;
	private int y;
	public Cell(int x,int y){
		this.x = x;
		this.y = y;
	}
	public String toString(){
		return "x="+x+",y="+y;
	}
}

 输出结果：

打印对象类型数组:[x=24,y=38, x=0,y=9, x=5,y=1, x=36,y=9, x=36,y=38, x=47,y=2, x=45,y=32, x=9,y=46, x=36,y=5, x=17,y=3]