if condition ignored, scanner input not being read or skipped (java) [duplicate]

This question already has an answer here:

• Java Scanner ignores answer 2 answers

I don't know where I'm going wrong.

System.out.println("type add to add arrays or type multiply to multiply the arrays");
    String m= "multiply";
    String a="add";
//String operation=input.nextLine();
if(input.nextLine().equals(m)){
    multiply(nums);

}else if(input.nextLine().equals(a)){
    add(nums);

}else{
    System.out.println("no response");
}

I get the add method to work when i type "add" but it ignores "multiply" and shows no response on the console.

EDIT: I changed it to store input in the variable operation, but it still skips to no response.

System.out.println("type add to add arrays or type multiply to multiply the arrays");
String operation=input.nextLine();
if(operation.equals("multiply")){
    multiply(nums);
}else if(operation.equals("add")){
    add(nums);
}else{
    System.out.println("no response");
}