split() -- 字符串的切割函数 replaceAll()--字符串的替换函数

    

	public static void main(String[] args) {
		replaceAll();
		
		split_01();
		
		split_02();
		
		split_03();

	}

	private static void split_03() {
		String str = "127.903.22.2.123";
		String[] strs = str.split("\\.");
		System.out.println("数组的长度是："+strs.length);
		for(int i=0;i<strs.length;i++){
			System.out.println(strs[i]);
		}
	}

	private static void split_02() {
		String str = "22    342 *  324 ";
		String[] strs = str.split(" +");
		System.out.println("数组的长度是："+strs.length);
		for(int i=0;i<strs.length;i++){
			System.out.println(strs[i]);
		}
	}

	private static void split_01() {
		String str = "188-2348-2249";
		String strs[] = str.split("-");
		System.out.println("数组长度是："+strs.length);
		for(int i =0;i<strs.length;i++){
			System.out.println(strs[i]);
		}
		
	}

	private static void replaceAll() {
		String str = "Hello12345World6789012";
		str = str.replaceAll("[\\d]+", "#");
		System.out.println(str);
	}