Encryption & Decryption of the Password

This Java program code will encrypt the password before storing in database and will decrypt the same before using those details in the application.

class EncryptDecrypt{
 public static void main(String arg[]){
  EncryptDecrypt edObj = new EncryptDecrypt();
  String str = arg[0];
  String enCryptStr = edObj.Encrypt(str);
  System.out.println (" Encrypted string : " + enCryptStr );
  System.out.println (" Decrypted string : " + edObj.Decrypt(enCryptStr));
 }
 
  //Encryption method
 public String Encrypt(String passwd) {
  int i,len,asci_code,temp_val=0;
  char ch;
  String out_str = new String();
  len = passwd.length();
  for(i=0;i<len;i++) {
   ch = passwd.charAt(i);
   asci_code = getAscii(ch);
   if(i < len/2) {
    temp_val = (asci_code * 3) + 10;
   }else {
    temp_val = (asci_code * 4) + 11;
   }
    out_str = out_str + temp_val;
  }
  return(out_str);
 }
 
 private char getCharec(int i) {
  /*for(int x=0;x<=arr.length;x++) {
   if(arr[x] == i) {
    return (chars.charAt(x));
   }
  }
  return 0;*/
  return (char)i;
 }
 
 private int getAscii(char c){
  /*for(int x=0;x<=chars.length();x++){
   if(chars.charAt(x) == c) {
    return (arr[x]);
   }
  }
  return 0;*/
  return (int)c;
 }
 
 /**
    * this function is to decrypt the password
    * @param string password
    */
 
 public String Decrypt(String passwd){
  int i,len,asci_code,temp_val=0;
  String out_str = new String();
  String char_str = new String();
  len = passwd.length();
  for(i=0;i<len;i+=3) {
   if((i+3) <= len){
    char_str = passwd.substring(i,i+3);
    asci_code = Integer.parseInt(char_str);
    if(i<(len - 2)/2) {
     temp_val = ((asci_code - 10)/3);
    } else {
     temp_val = ((asci_code - 11)/4);
    }
   }
   out_str = out_str + this.getCharec(temp_val);
  }
  return(out_str);
 }
 
}