Chapter 4: Fundamental Data Types

Strings

• A string is a sequence of characters.
• String concatenation operator: +
• String methods: length(), substring(), ...
• Converting a string to an integer, int year = Integer.parseInt("2008");
• Converting a string to a double, double price = Double.parseDouble("2.25");

Reading Input

• Use the java.util.Scanner class
• Scanner in = new Scanner(System.in);
• int year = in.nextInt();
• double price = in.nextDouble();
• String word = in.next();
• String words = in.nextLine();

Lecture Code

• TestProgram.java