java Android studio 71 字符串截取 split（）

public class HelloWorld {
    public static void main(String []args) {
       System.out.println("Hello World!");
		String str = "123,456,345";
		String[] strs = str.split(",");
		for(int i=0;i<strs.length;i++)
			{System.out.println(strs[i].toString());
			System.out.println("字符串长度为："+strs.length);
			 System.out.println("输出数组最后一个为："+strs[strs.length-1]);
			}
    }
}