把一段话的每个首字母大写，substring,spilt,length,length(),size()

package test;import java.util.Scanner;public class LianXi {    //把一段话的每个首字母大写    public static void main(String[] args) {        System.out.println("Please input a english sentence:");        Scanner scanner = new Scanner(System.in);        String s = scanner.nextLine();        String[] lists = s.split(" ");        for (int i = 0; i < lists.length; i++) {            lists[i] = lists[i].substring(0, 1).toUpperCase() + lists[i].substring(1);            System.out.print(lists[i] + " ");        }//        LianXi.test();        //split方法limit参数测试    }    public static void test() {        String s = "boobooboo";        for (String a : s.split("o", 2)) {          //匹配1次，分成2段            System.out.print("|_" + a + "_| ");        }        System.out.println();        for (String a : s.split("o", 8)) {          //匹配7次，要分成8段，只有7段            System.out.print("|_" + a + "_| ");        }        System.out.println();        for (String a : s.split("o", 0)) {          //匹配所有次，去除结尾空格            System.out.print("|_" + a + "_| ");        }        System.out.println();        for (String a : s.split("o", -2)) {          //匹配所有次            System.out.print("|_" + a + "_| ");        }        System.out.println();        for (String a : s.split("o", -8)) {          //匹配所有次            System.out.print("|_" + a + "_| ");        }    }/*|_b_| |_obooboo_| |_b_| |__| |_b_| |__| |_b_| |__| |__| |_b_| |__| |_b_| |__| |_b_| |_b_| |__| |_b_| |__| |_b_| |__| |__| |_b_| |__| |_b_| |__| |_b_| |__| |__|  */}/*String  substring(int beginIndex)Returns a string that is a substring of this string.String  substring(int beginIndex, int endIndex)Returns a string that is a substring of this string.String[]    split(String regex)Splits this string around matches of the given regular expression.String[]    split(String regex, int limit)Splits this string around matches of the given regular expression.limit 大于0 匹配 limit-1次,保证最后匹配limit 等于0 无限次匹配，去除最后多余空格limit 小于0 无限次匹配*//*length      数组对象使用           String[]length()    字符串对象使用         Stringsize()      泛型集合对象使用        List */