正则表达式---字符类

正则表达式—字符类

public class Demo2_Regex {

	public static void main(String[] args) {
		//demo1();
		//demo2();
		//demo3();	
		//demo4();
		//demo5();
		//demo6();
		//demo7();
	}

	private static void demo7() {
		String regex = "[a-z&&[^m-p]]";					//包含a-z和除去m-p的范围内的全部单个字母,即a-l和q-z
		System.out.println("a".matches(regex));
		System.out.println("z".matches(regex));
		System.out.println("m".matches(regex));
		System.out.println("n".matches(regex));
		System.out.println("l".matches(regex));
	}

	private static void demo6() {
		String regex = "[a-z&&[^bc]]";					//包含a-z和除去bc三个字符的范围内的全部单个字母
		System.out.println("a".matches(regex));
		System.out.println("z".matches(regex));
		System.out.println("b".matches(regex));
		System.out.println("c".matches(regex));
		System.out.println("1".matches(regex));
	}

	private static void demo5() {
		String regex = "[a-z&&[def]]";					//包含a-z和def三个字符的交集范围内的全部单个字母，同[def]
		System.out.println("a".matches(regex));
		System.out.println("z".matches(regex));
		System.out.println("d".matches(regex));
		System.out.println("e".matches(regex));
		System.out.println("f".matches(regex));
		System.out.println("1".matches(regex));
	}

	private static void demo4() {
		String regex = "[a-d[m-p]]";					//包含a-z和m-p的并集范围内的全部单个字母，同时包含两头字母
		System.out.println("a".matches(regex));
		System.out.println("A".matches(regex));
		System.out.println("m".matches(regex));
		System.out.println("ap".matches(regex));
		System.out.println("1".matches(regex));
		System.out.println("z".matches(regex));
	}

	private static void demo3() {
		String regex = "[a-zA-Z]";					//包含a-zA-Z范围内的全部字母，同时包含两头字母
		System.out.println("a".matches(regex));
		System.out.println("A".matches(regex));
		System.out.println("z".matches(regex));
		System.out.println("Z".matches(regex));
		System.out.println("1".matches(regex));
		System.out.println("%".matches(regex));
		System.out.println("d".matches(regex));
	}

	private static void demo2() {
		String regex = "[^abc]";
		System.out.println("a".matches(regex));
		System.out.println("b".matches(regex));
		System.out.println("c".matches(regex));
		System.out.println("d".matches(regex));
		System.out.println("1".matches(regex));
		System.out.println("%".matches(regex));
		System.out.println("10".matches(regex));		//表示非a,b,c的单个字符，10是1和0两个字符不符合规则
	}

	private static void demo1() {
		String regex = "[abc]";
		System.out.println("a".matches(regex));
		System.out.println("b".matches(regex));
		System.out.println("c".matches(regex));
		System.out.println("d".matches(regex));
		System.out.println("1".matches(regex));
		System.out.println("%".matches(regex));
	}

	
	
}