正则表达式（3）——习题练习

韩顺平老师 B站

习题练习

public static void main(String[] args) {
   
	String content = "wu6426-miao@org.com";
	if(content.matches("^[\\w-]+@([a-zA-Z]+\\.)+[a-zA-Z]+$")){
   
		System.out.println("合法");
	}else{
   
		System.out.println("不合法");	
	}
}

public static void main(String[] args) {
   
	String content = "-19";
	if(content.matches("^(-)?\\d+(\\.)\\d+$")){
   
		System.out.println("小数");
	}else{
   
		System.out.println("整数");	
	}
}

public static void main(String[] args) {
   
	String content = "http://www.sohu.com:8080/abc/index.htm";
	
	Pattern pattern = Pattern.compile("^([a-z]+)://([a-z.]+[a-z]):(\\d+)(/[a-z]+/)([a-z.]+[a-z])$");
	Matcher matcher = pattern.matcher(content);
	while(matcher.find()){
   
		System.out.println("协议为：" + matcher.group(1));
		System.out.println("域名为：" + matcher.group(2));
		System.out.println("端口为：" + matcher.group(3));
		System.out.println("文件名为：" + matcher.group(5));
	}
}