JAVA中的正则表达式--待续

package com.st.day20150525;

public class StringTest03 {
    
    public static String message ="The class String includes methods for examining "
            + "individual characters of the sequence, for comparing strings, "
            + "for searching strings, for extracting substrings, and for "
            + "creating a copy of a string with all characters translated to "
            + "uppercase or to lowercase. Case mapping is based on the Unicode "
            + "Standard version specified by the Character class.";
    
    public static void main(String[] args) {
        //1、使用String中的内建的功能，进行字符的严重
        System.out.println("1243".matches("-?\\d+"));
        System.out.println("+911".matches("-?\\d+"));
        System.out.println("+911".matches("(-|\\+)?\\d+"));
        
        //2、使用String.split() 将字符串从正则表达式匹配的地方分开
        String[] str01 = message.split("of|to");    // 从of 或者 to 的地方进行分开
        for (int i = 0; i < str01.length; i++) {
            System.out.println("第"+i+": "+str01[i]);
        }
        String[] str02 = message.split("\\W");     // 从空格的地方进行分开
        for (int i = 0; i < str02.length; i++) {
            System.out.print("第"+i+": "+str02[i]+"  ");
        }
    }
}