How to read several values from console in java?

Question

I need to read a string, integer number and one
more string. Then I want to work with this data. I use the next code:

Scanner in = new Scanner(System.in);
String str1 = in.nextLine();
int a = in.nextInt();
String str2 = in.nextLine();

But after inputting second line (int a) my programm skips inputting str2.
Why?
How can I fix it?

Answer 1

I have fixed it.
I changed the line "int a = in.nextInt();" to the next one "int a = Integer.parseInt(in.nextLine());".
It works correctly now. But I don't know why. Can somebody explain ?