如何在java hsa控制台中删除两个字符串之间的空格？

Question

public class TestParse
{
    static Console c;           // The output console

    public static void main (String[] args)
    {
        c = new Console ();
        String userNum = c.readString ();
        String userNum2 = userNum.replaceAll ("\\p{Z}","");
        c.println (userNum2);

   } // main method
} // TestParse class

The input is supposed to be one digit followed by a space and then another digit. Every time I try that, it only prints the first digit. How do I fix that? It should print the two digits without a space between them. I already tried using st.replaceAll("\\\\s+","") and st.replaceAll("\\\\s","")

Answer 1

Try this:

String userNum2 = unserNum.replaceAll("( )+", "");

Or

String userNum2 = unserNum.replaceAll(" ", "");