Thread: how to indent

In brief, I'm feeding my code a piece of unformatted source code. My code transforms the text into a string, then list in order to easily iterate through the latter and format depending on the keyword/expression come across. Now, on coming across '{' a break is executed, but how do you suggest I do the indentation "logic"?

For instance

public class jello{ public static main(String[] args){ jello a = new jello(); run();} public boolean run(){ if (x =1){ ok}}}

It should return,

public class jello
{
   public static main(String[] args)
  {
      jello a = new jello(); 
      run();
   }
 
  public boolean run() 
  {
      if (x ==1)
     {
          return ok; 
     }
  }
}

How do you suggest I "code" the indentation?

Many thanks!