CS 145 Lecture 3
September 16, 2011 by Chris Johnson. Filed under
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cs145, fall 2011, lectures.
Agenda
- String
- Scanner
- objects vs. primitives
- methods vs. operators
- a bunch of common String methods
- KML
Code
StringFun.java
package lecture;
import java.util.Scanner;
public class StringFun {
public static void main(String[] args) {
char letter = 'a';
String alphabet = "abcdefghijklmnopqrstuvwxyz";
int sizeOfAlphabet = alphabet.length();
System.out.println(sizeOfAlphabet);
Scanner in = new Scanner(System.in);
// System.out.println("Enter something, NOW: ");
// String word = in.next();
// System.out.println("The 1st character is: " + word.charAt(1));
System.out.print("Enter your title: ");
String title = in.next();
String chopped = title.substring(0, 2);
System.out.println(chopped);
boolean isRich = chopped.equals("Dr");
System.out.println("You are rich: " + isRich);
}
}
Placemarker.java
package lecture;
import java.util.Scanner;
public class Placemarker {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.print("Name: ");
String name = in.next();
System.out.print("Description: ");
String description = in.next();
System.out.print("Lon/lat: ");
double lon = in.nextDouble();
double lat = in.nextDouble();
System.out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
System.out.println("<kml xmlns=\"http://www.opengis.net/kml/2.2\">");
System.out.println("<Document>");
System.out.println("<Style id=\"seethrough\"><PolyStyle><color>7fffffff</color></PolyStyle></Style>");
System.out.println("<Placemark>");
System.out.println("<name>" + name + "</name>");
System.out.println("<description>This tree is surreal.</description>");
System.out.println(" <Point>");
System.out.println("<coordinates>-93.65057870772075,42.03081012742565</coordinates>");
System.out.println("</Point>");
System.out.println("</Placemark>");
System.out.println("</Document>");
System.out.println("</kml>");
}
}
TODO
- Work on preassignment 1
- Read 1.4 in your book
Haiku
born 1990
was "20" until this year
now "201"