java - I get an extra input space when I run my code -

i run code put in integer, press enter, input space. in input space put in number input space want says "write line". adds numbers put in first input space , input space. please help. (p.s sorry code's format)

my output: write integer (put input here) (put input here) write integer (put input here)

i don't want 2nd input option.

public static void main(string eth[]){  system.out.println("write integer"); scanner input = new scanner(system.in);   if (input.hasnextint()){ } else system.out.println("play rules"); scanner input1 = new scanner(system.in); int = input1.nextint(); {  system.out.println("write integer"); scanner input2 = new scanner(system.in); int b = input2.nextint();  int answer = (a+b);  system.out.println(answer);          }     } }    

the space you're getting logical error in first if statement. if input.hasnextint() true, skip on else call scanner directly below because not grouped else statement. also, allows 2 attempts input1 , 1 input2. therefore, i'd switch while loop each , create method read in integers instead of duplicating code.

public static void main(string eth[]) {     int = readint();     int b = readint();     int answer = (a + b);     system.out.println(answer); } private static int readint() {     system.out.println("write integer");     scanner input = null;     while(!(input = new scanner(system.in)).hasnextint()){         system.out.println("play rules, write integer");     }     return input.nextint(); }