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rjlutz / info.text
Last active Oct 10, 2019
View info.text
code is now here:
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
rjlutz / strings.xml
Created Sep 25, 2019
Building zybooks BandDatabase example in Android Studio with Master/Detail Pattern
View strings.xml
<string name="app_name">The Band Database</string>
<string-array name="bands">
<item>The Beatles</item>
<string-array name="descriptions">
rjlutz /
Last active Jun 25, 2019
Lists, Stacks, Queues and Priority Queues (Chapter 20) -- examples from Liang Intro to Java Comprehensive 10e
public class Circle extends GeometricObject {
private double radius;
public Circle() {
public Circle(double radius) {
this.radius = radius;
rjlutz / HexagonalRing.pde
Created May 30, 2019
HexagonalRing Class for Shapes_Practice_Coding_Challenge
View HexagonalRing.pde
public class HexagonalRing extends Shape {
float sInner;
float sOuter;
HexagonalRing(float a, float b, float c, float d) {
// super(); // this happens, silently, even if omitted
x = a;
y = b;
sInner = c;
rjlutz /
Created Feb 25, 2019
Class to Perform Creation of Die Set
package edu.ggc.lutz.dungeonmasterdiceroller;
// adapted from:
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class DiceNotation {
rjlutz / generate-images.script
Last active Jan 19, 2019
Automate JMol to created multiple 2d images through looping
View generate-images.script
# script to systematically create many images of molecular structures
# R Lutz 19 Jan 2019
set antialiasImages FALSE # the following is recommended to avoid ragged
# edges around the image, per JMol docs
# ====================================================================
var rot_max = 2.0 # in degrees
var output_width = 600 # shouldn't be > 600, according to automl guidance
rjlutz /
Last active Jan 17, 2019
Starter code and data files for neural net / python practice assignment
## modified from:
## and
## thanks!
import csv
from numpy import exp, array, random, dot
class NeuralNetwork():
def __init__(self):
rjlutz /
Last active Nov 21, 2018
Exceptions and File I/O (Chapter 12) -- examples from Liang Intro to Java Comprehensive 10e
public class CircleWithException {
/** The radius of the circle */
private double radius;
/** The number of the objects created */
private static int numberOfObjects = 0;
/** Construct a circle with radius 1 */
public CircleWithException() {
rjlutz / storage.dart
Last active Nov 13, 2018
helpful artifacts for the flutter student picker app
View storage.dart
// thanks -
import 'dart:async';
import 'dart:io';
import 'package:path_provider/path_provider.dart';
import 'student.dart';
class Storage {
Future<String> get _localPath async {
final directory = await getApplicationDocumentsDirectory();
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