need guidness in java code

[saneha]

sir

my question about if user enter wrong input like enter text instead of number then out catch block will be executes and message appear what we type but sir i want to know how can i again get input or show the message again until user enter correct entry, like

String total=JOptionPane.showInputDialog("Enter total number");

try{

float i=Float.ParseFloat(total);//if exception catch block executes

}

catch(NumberFormatException nfe{

JOptionPane.showMessageDialoge("enter correct format");

}

[Vuhelper]

Following code explains how you can take input from user again and again. You can modify logic according to your need.





import javax.swing.JOptionPane;



public class AgainInput {



public static void main(String[] args){



float input = -1 ;

while(input == -1){

input = takeInput();

}

}





public static float takeInput(){



float i;

String total=JOptionPane.showInputDialog("Enter total number");



try{



i=Float.parseFloat(total);//if exception catch block executes

return i;

}

catch(NumberFormatException nfe){

JOptionPane.showMessageDialog(null,"enter correct format");

return -1;

}



}

}