How to use align-regex to align text as column or matrix?

Question

I am trying to align code using align-regex but I could not figure out how to solve the below problem.

This is what I have:

public class Person
{
    public static String id = "";
    private String name = "";
    public int age = 10;

} 

This is what I am trying to get:

public class Person
{
    public  static String id =       "";
    private String name   =  "name";
    public  int    age    =  10;

} 

Actually I just want to separate them into each column.

I have tried M-x align-regex RET \(s-*\)\s- and many more but none is working. Please help me solve this or advice me.

Answer 1

If you don't mind re-indenting afterwards:

C-uM-x align-regex RET \(\s-+\) RETRETRETy

To re-activate the mark and re-indent should then be:

C-xC-xTAB

---

To avoid the need to re-indent, we need to enable it to ignore as much of the initial space as possible:

C-uM-x align-regex RET \s-*\(\s-+\) RETRETRETy