Character.isDigit()判断字符串是否包含数字

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1. 代码

	public static void main(String[] args) {
		SpringApplication.run(LearnFreemarkTestApplication.class, args);
		String str="今日头条2018年改名为字节跳动";
		char[] charArray = str.toCharArray();
		boolean digit;
		for (int i = 0; i < charArray.length; i++) {
			 digit = Character.isDigit(charArray[i]);
			if(digit) {
				System.out.println("包含数字："+charArray[i]);
			}
		}

2. 结果：