nextline in java not working code example

Example 1: java string next line

// its \r\n
String a = "Hello, "
String b = "there!"
System.out.println(a+b);//returns Hello, there
System.out.println(a+"\r\n"+b);//returns Hello, 
//there! //it will be on the next line!

Example 2: sc.nextline skips

int option = input.nextInt();
input.nextLine();  // Consume newline left-over
String str1 = input.nextLine();