Do-While-Frage Java

Question

Mein Programm wird Informationen über Gebäude liefern, die in einer Online-Oracle-Datenbank gespeichert ist. Ich habe es gebeten, den Benutzer zu bitten, die Gebäudenummer einzugeben und dann die Ergebnisse von mehreren Abfragen laufen zu lassen und anzuzeigen. Hier

ist, was ich habe, so weit:

String userbnumber = null; 
try { 
    BufferedReader obj = new BufferedReader(new InputStreamReader(System.in)); 
    System.out.print("Please enter the building number: "); 
    userbnumber = obj.readLine(); 
} catch (IOException e) { 
} 
// A Lot of queries which use userbnumber as the basis for getting data from tables 

Doch was ich nicht herausfinden kann, ist, wie/wo verwenden die do-while-Klausel für die Gebäudenummer fragen zu halten, bis der Benutzer eingibt 0 An diesem Punkt würde das Programm "Danke für Ihre Zeit" drucken und stoppen.

Jede Hilfe würde sehr geschätzt werden.

Answer 1

BufferedReader obj = new BufferedReader(new InputStreamReader(System.in)); 
do { 
    try { 
     System.out.print("Please enter the building number: "); 
     userbnumber = obj.readLine(); 
     if(!usernumber.equals("0"){ 
     //perform action here 
     } 
    } catch (IOException e) { 
     //handle it 
    } 
} while(!userbnumber.equals("0")); 

besserer Weg ist, um

while(true){ 
     try { 
      System.out.print("Please enter the building number: "); 
      userbnumber = obj.readLine(); 
      if(usernumber.equals("0"){ 
        break; 
      } 
      //perform action here 
     } catch (IOException e) { 
      //handle it 
     } 

} 

Answer 2

package pack34; 

import java.sql.*; 
import java.io.*; 

public class Letstryagain34 { 
    public static void main(String args[]) 
    { 
    String userbnumber = null; 
    try { 
     BufferedReader obj = new BufferedReader(new InputStreamReader(System.in)); 
     System.out.print("Please enter the building number: "); 
     userbnumber = obj.readLine(); 
     } 
     catch (IOException e) { 
      // handle it! 
     } 
     /*A Lot of queries which use userbnumber as the basis for getting data from tables 
     */  
do{ 
/* Fetch the Question from Database & write back the answer here*/ 

     System.out.print("Want to continue : "); 
int choice = obj.readLine(); 
}while(choice!=0); 
    } 
} 

Answer 3

package pack34; 

import java.sql.*; 
import java.io.*; 

public class Letstryagain34 { 
    public static void main(String args[]) 
    { 
    String userbnumber = null; 
    try { 
     BufferedReader obj = new BufferedReader(new InputStreamReader(System.in)); 
     do{ 
      System.out.print("Please enter the building number: "); 
      userbnumber = obj.readLine(); 
     }while(!"0".equals(userbnumber)) 
      System.out.println("Thank you for your time"); 
     } 
     catch (IOException e) { 
      System.out.println("Argh! Nasty error.."); 
     } 
     /*A Lot of queries which use userbnumber as the basis for getting data from tables 
     */  
    } 
}