Question

输入：hi ma name是jack＆amp;我已经23岁了#thanks

输出：嗨，马，名字，是，杰克，我，年，谢谢

Answer 1

@ M.albi，这对我有用。

import org.apache.commons.lang3.StringUtils;

public class Hello {

public static void main(String[] args) {
    String abc = "hi ma name is jack & I am 23 years # thanks";

    for (String string : abc.split(" ")) {
        if(StringUtils.isAlphanumeric(string) && !StringUtils.isNumeric(string)) {
            System.out.println(string);
        }
    }

}

}

Answer 2

Scanner scanner = new Scanner(System.in);
String s = scanner.nextLine();

isletter(s);  // a call to the function


// function
public void isletter(String s)
{

for (int i = 0; i < s.length(); i++)
{
      if (isLetter(s.charAt(i) ) )
    System.out.println(s.charAt(i));

   else System.out.println(""); 


}

Answer 3

这个怎么样：

import java.util.regex.Pattern;
import java.util.stream.Collectors;

public static void main(String[] args){
    Pattern spacePattern = Pattern.compile(" ");
    Pattern alphaPattern = Pattern.compile("[a-zA-Z]+");
    String input = "hi ma name is jack & I am 23 years # thanks";

    String output = spacePattern.splitAsStream(input)
            .filter(str -> alphaPattern.matcher(str).matches())
            .collect(Collectors.joining(", "));

    System.out.println(output);
}

如何从没有数字的字符串打印word，而不使用Java中的数组

3 个答案: