java - Why cant I input info after if statement? No errors show -

how can program ask input using scanner after if statement?

import java.util.scanner;  public class app1 {      public static void main(string[] args) {          scanner keyboard = new scanner(system.in);          string gender;         string fname;         string lname;         int age;         string female = "f";         string male = "m";         string = "";         string gettingmarried = "y";         string notgettingmarried = "n";          system.out.println("what gender (m or f)");         gender = keyboard.nextline();         system.out.println("what first name?");         fname = keyboard.nextline();         system.out.println("what last name?");         lname = keyboard.nextline();         system.out.println("age:");         age = keyboard.nextint();         system.out.println();          if (gender.equals(female) && age >= 20) {             system.out.println("are married " + fname + " (y or n?)");             = keyboard.nextline();          } else if (gender.equals(male) && age >= 20) {             system.out.println("are married" + fname + "(y or n?)");             = keyboard.nextline();         }      } } 

it because use nextint() takes int value , not full line. when try again read keyboard.nextline() catching it's rest of sentence of line in put int.

change system.out.println(); before if statement keyboard.nextline();

edit: if want more extended explanation why have put keyboard.nextline(); after keyboard.nextint() can consult answer in question same problem: why isn't scanner input working?

i expect helpful you!