strdbclass.java

public class DBClass { private String driver private String url private String user

package bean;

import java.util.*;

public class StrClass {
   private String str;
   public StrClass(){
       str="";
   }
   public StrClass(String str){
       this.str=str;
   }
   public String getStr(){
       return this.str;
   }
   public void setStr(String str){
       this.str=str;
   }
   public boolean isNum(){
       boolean bool=true;
       for(int i=0;i<str.length();i++){
           char ch=str.charAt(i);
           if(!Character.isDigit(ch)){
               bool=false;
               break;
           }
       }
       return bool;
   }
   public boolean isEmail(){
       if(str.indexOf("@")==-1){
           return false;
       }else if(str.indexOf(".",str.indexOf("@"))==-1){
           return false;
       }else{
           return true;
       }
   }
   public int toInt(){
       return Integer.parseInt(str);
   }
   public float toFloat(){
       return Float.parseFloat(str);
   }
}