java - 如何使用正则表达式查找字符串是否至少有一个字符？

Question

例子:

1. "1 name": 应该说它有字符
2. “10,000”:好的
3. “na123me”:应该说它有字符
4. "na 123, 000": 应该说它有字符

Answer 1

public class HasCharacters  {
    public static void main( String [] args ){
        if( args[0].matches(".*[a-zA-Z]+.*")){
            System.out.println( "Has characters ");
        } else {
            System.out.println("Ok");   
        }
    }
}

测试

$java HasCharacters "1 name" 
Has characters 
$java HasCharacters "10,000"
Ok
$java HasCharacters "na123me"
Has characters 
$java HasCharacters "na 123, 000" 
Has characters