Poj Solution 1896

http://poj.org/problem?id=1896

//* @author:alpc12
import java.util.*;
import java.io.*;

public class Main {
 public static void main(String[] args) throws Exception {
  BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
  String line;
  StringBuffer sb = new StringBuffer();
  while ((line = in.readLine()) != null) {
    for (int i = 0; i < line.length(); i++) {
         char ch = line.charAt(i);
      if (ch != ' ' && ch != 9)
        sb.append(ch);
    }
   }
  in.close();

  int indent = 1;
  boolean needws = true;
  System.out.println("{");
  for (int i = 1; i < sb.length(); i++) {
        char ch = sb.charAt(i);
    if (needws && ch != '}') {
        printws(indent);
        needws = false;
    }
      switch (ch) {
        case '{':
           System.out.println(" {");
           indent++;
           needws = true;
        break;
    case '}':
       needws = false;
       indent--;
       printws(indent);
      System.out.print("}");
      break;
      case ';':
      System.out.println(";");
      needws = true;
      break;
      case ',':
      System.out.print(", ");
      break;
      default:
      System.out.print(ch);
     }
  }
}

private static void printws(int indent) {
 for (int i = indent; --i >= 0;)
    System.out.print("    ");
 }
}