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JAVA-1749 Move modules language interop and console

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This commit is contained in:
mikr
2020-06-07 13:22:16 +02:00
parent 76dbb91058
commit 4cb07819f3
17 changed files with 214 additions and 9 deletions
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62
core-java-modules/core-java/src/main/java/com/baeldung/asciiart/AsciiArt.java
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@@ -1,62 +0,0 @@
package com.baeldung.asciiart;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
public class AsciiArt {
public AsciiArt() {
}
public void drawString(String text, String artChar, Settings settings) {
BufferedImage image = getImageIntegerMode(settings.width, settings.height);
Graphics2D graphics2D = getGraphics2D(image.getGraphics(), settings);
graphics2D.drawString(text, 6, ((int) (settings.height * 0.67)));
for (int y = 0; y < settings.height; y++) {
StringBuilder stringBuilder = new StringBuilder();
for (int x = 0; x < settings.width; x++) {
stringBuilder.append(image.getRGB(x, y) == -16777216 ? " " : artChar);
}
if (stringBuilder.toString()
.trim()
.isEmpty()) {
continue;
}
System.out.println(stringBuilder);
}
}
private BufferedImage getImageIntegerMode(int width, int height) {
return new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
}
private Graphics2D getGraphics2D(Graphics graphics, Settings settings) {
graphics.setFont(settings.font);
Graphics2D graphics2D = (Graphics2D) graphics;
graphics2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
return graphics2D;
}
public class Settings {
public Font font;
public int width;
public int height;
public Settings(Font font, int width, int height) {
this.font = font;
this.width = width;
this.height = height;
}
}
}

26
core-java-modules/core-java/src/main/java/com/baeldung/console/ConsoleConsoleClass.java
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@@ -1,26 +0,0 @@
package com.baeldung.console;
import java.io.Console;
public class ConsoleConsoleClass {
public static void main(String[] args) {
Console console = System.console();
if (console == null) {
System.out.print("No console available");
return;
}
String progLanguauge = console.readLine("Enter your favourite programming language: ");
console.printf(progLanguauge + " is very interesting!");
char[] pass = console.readPassword("To finish, enter password: ");
if ("BAELDUNG".equals(pass.toString().toUpperCase()))
console.printf("Good! Regards!");
else
console.printf("Nice try. Regards.");
}
}

76
core-java-modules/core-java/src/main/java/com/baeldung/console/ConsoleScannerClass.java
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@@ -1,76 +0,0 @@
package com.baeldung.console;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
import java.util.regex.Pattern;
public class ConsoleScannerClass {
public static void main(String[] args) {
System.out.println("Please enter your name and surname: ");
Scanner scanner = new Scanner(System.in);
String nameSurname = scanner.nextLine();
System.out.println("Please enter your gender: ");
char gender = scanner.next().charAt(0);
System.out.println("Please enter your age: ");
int age = scanner.nextInt();
System.out.println("Please enter your height in meters: ");
double height = scanner.nextDouble();
System.out.println(nameSurname + ", " + age + ", is a great " + (gender == 'm' ? "guy" : "girl") + " with " + height + " meters height" + " and " + (gender == 'm' ? "he" : "she") + " reads Baeldung.");
System.out.print("Have a good");
System.out.print(" one!");
System.out.println("\nPlease enter number of years of experience as a developer: ");
BufferedReader buffReader = new BufferedReader(new InputStreamReader(System.in));
int i = 0;
try {
i = Integer.parseInt(buffReader.readLine());
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("You are a " + (i > 5 ? "great" : "good") + " developer!");
int sum = 0, count = 0;
System.out.println("Please enter your college degrees. To finish, enter baeldung website url");
while (scanner.hasNextInt()) {
int nmbr = scanner.nextInt();
sum += nmbr;
count++;
}
int mean = sum / count;
System.out.println("Your average degree is " + mean);
if (scanner.hasNext(Pattern.compile("www.baeldung.com")))
System.out.println("Correct!");
else
System.out.println("Baeldung website url is www.baeldung.com");
if (scanner != null)
scanner.close();
}
}

61
core-java-modules/core-java/src/main/java/com/baeldung/printf/PrintfExamples.java
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@@ -1,61 +0,0 @@
package com.baeldung.printf;
import java.util.Date;
import java.util.Locale;
public class PrintfExamples {
public static void main(String[] args) {
printfNewLine();
printfChar();
printfString();
printfNumber();
printfDateTime();
printfBoolean();
}
private static void printfNewLine() {
System.out.printf("baeldung%nline%nterminator");
}
private static void printfString() {
System.out.printf("'%s' %n", "baeldung");
System.out.printf("'%S' %n", "baeldung");
System.out.printf("'%15s' %n", "baeldung");
System.out.printf("'%-10s' %n", "baeldung");
}
private static void printfChar() {
System.out.printf("%c%n", 's');
System.out.printf("%C%n", 's');
}
private static void printfNumber() {
System.out.printf("simple integer: %d%n", 10000L);
System.out.printf(Locale.US, "%,d %n", 10000);
System.out.printf(Locale.ITALY, "%,d %n", 10000);
System.out.printf("%f%n", 5.1473);
System.out.printf("'%5.2f'%n", 5.1473);
System.out.printf("'%5.2e'%n", 5.1473);
}
private static void printfBoolean() {
System.out.printf("%b%n", null);
System.out.printf("%B%n", false);
System.out.printf("%B%n", 5.3);
System.out.printf("%b%n", "random text");
}
private static void printfDateTime() {
Date date = new Date();
System.out.printf("%tT%n", date);
System.out.printf("hours %tH: minutes %tM: seconds %tS%n", date, date, date);
System.out.printf("%1$tH:%1$tM:%1$tS %1$tp %1$tL %1$tN %1$tz %n", date);
System.out.printf("%1$tA %1$tB %1$tY %n", date);
System.out.printf("%1$td.%1$tm.%1$ty %n", date);
}
}

15
core-java-modules/core-java/src/main/resources/js/bind.js
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@@ -1,15 +0,0 @@
var first = {
name: "Whiskey",
age: 5
};
var second = {
volume: 100
};
Object.bindProperties(first, second);
print(first.volume);
second.volume = 1000;
print(first.volume);

1
core-java-modules/core-java/src/main/resources/js/locations.js
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@@ -1 +0,0 @@
print(__FILE__, __LINE__, __DIR__);

19
core-java-modules/core-java/src/main/resources/js/math_module.js
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@@ -1,19 +0,0 @@
var math = {
increment: function (num) {
return ++num;
},
failFunc: function () {
try {
throw "BOOM";
} catch (e if typeof e === 'string') {
print("String thrown: " + e);
}
catch (e) {
print("this shouldn't happen!");
}
}
};
math;

11
core-java-modules/core-java/src/main/resources/js/no_such.js
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@@ -1,11 +0,0 @@
var demo = {
__noSuchProperty__: function (propName) {
print("Accessed non-existing property: " + propName);
},
__noSuchMethod__: function (methodName) {
print("Invoked non-existing method: " + methodName);
}
};
demo;

1
core-java-modules/core-java/src/main/resources/js/script.js
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@@ -1 +0,0 @@
function increment(num) ++num;

2
core-java-modules/core-java/src/main/resources/js/trim.js
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print(" hello world".trimLeft());
print("hello world ".trimRight());

9
core-java-modules/core-java/src/main/resources/js/typed_arrays.js
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@@ -1,9 +0,0 @@
function arrays(arr) {
var javaIntArray = Java.to(arr, "int[]");
print(javaIntArray[0]);
print(javaIntArray[1]);
print(javaIntArray[2]);
}
arrays([100, "1654", true]);

20
core-java-modules/core-java/src/test/java/com/baeldung/asciiart/AsciiArtIntegrationTest.java
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@@ -1,20 +0,0 @@
package com.baeldung.asciiart;
import java.awt.Font;
import org.junit.Test;
import com.baeldung.asciiart.AsciiArt.Settings;
public class AsciiArtIntegrationTest {
@Test
public void givenTextWithAsciiCharacterAndSettings_shouldPrintAsciiArt() {
AsciiArt asciiArt = new AsciiArt();
String text = "BAELDUNG";
Settings settings = asciiArt.new Settings(new Font("SansSerif", Font.BOLD, 24), text.length() * 30, 30); // 30 pixel width per character
asciiArt.drawString(text, "*", settings);
}
}

113
core-java-modules/core-java/src/test/java/com/baeldung/scripting/NashornUnitTest.java
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@@ -1,113 +0,0 @@
package com.baeldung.scripting;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import javax.script.Bindings;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import java.io.InputStreamReader;
import java.util.List;
import java.util.Map;
public class NashornUnitTest {
private ScriptEngine engine;
@Before
public void setUp() {
engine = new ScriptEngineManager().getEngineByName("nashorn");
}
@Test
public void trim() throws ScriptException {
engine.eval(new InputStreamReader(NashornUnitTest.class.getResourceAsStream("/js/trim.js")));
}
@Test
public void locations() throws ScriptException {
engine.eval(new InputStreamReader(NashornUnitTest.class.getResourceAsStream("/js/locations.js")));
}
@Test
public void bindProperties() throws ScriptException {
engine.eval(new InputStreamReader(NashornUnitTest.class.getResourceAsStream("/js/bind.js")));
}
@Test
public void magicMethods() throws ScriptException {
engine.eval("var demo = load('classpath:js/no_such.js');" + "var tmp = demo.doesNotExist;" + "var none = demo.callNonExistingMethod()");
}
@Test
public void typedArrays() throws ScriptException {
engine.eval(new InputStreamReader(NashornUnitTest.class.getResourceAsStream("/js/typed_arrays.js")));
}
@Test
public void basicUsage() throws ScriptException {
Object result = engine.eval("var greeting='hello world';" + "print(greeting);" + "greeting");
Assert.assertEquals("hello world", result);
}
@Test
public void jsonObjectExample() throws ScriptException {
Object obj = engine.eval("Java.asJSONCompatible({ number: 42, greet: 'hello', primes: [2,3,5,7,11,13] })");
Map<String, Object> map = (Map<String, Object>) obj;
Assert.assertEquals("hello", map.get("greet"));
Assert.assertTrue(List.class.isAssignableFrom(map.get("primes").getClass()));
}
@Test
public void tryCatchGuard() throws ScriptException {
engine.eval("var math = loadWithNewGlobal('classpath:js/math_module.js');" + "math.failFunc();");
}
@Test
public void extensionsExamples() throws ScriptException {
String script = "var list = [1, 2, 3, 4, 5];" + "var result = '';" + "for each (var i in list) {" + "result+=i+'-';" + "};" + "print(result);";
engine.eval(script);
}
@Test
public void bindingsExamples() throws ScriptException {
Bindings bindings = engine.createBindings();
bindings.put("count", 3);
bindings.put("name", "baeldung");
String script = "var greeting='Hello ';" + "for(var i=count;i>0;i--) { " + "greeting+=name + ' '" + "}" + "greeting";
Object bindingsResult = engine.eval(script, bindings);
Assert.assertEquals("Hello baeldung baeldung baeldung ", bindingsResult);
}
@Test
public void jvmBoundaryExamples() throws ScriptException, NoSuchMethodException {
engine.eval("function composeGreeting(name) {" + "return 'Hello ' + name" + "}");
Invocable invocable = (Invocable) engine;
Object funcResult = invocable.invokeFunction("composeGreeting", "baeldung");
Assert.assertEquals("Hello baeldung", funcResult);
Object map = engine.eval("var HashMap = Java.type('java.util.HashMap');" + "var map = new HashMap();" + "map.put('hello', 'world');" + "map");
Assert.assertTrue(Map.class.isAssignableFrom(map.getClass()));
}
@Test
public void loadExamples() throws ScriptException {
Object loadResult = engine.eval("load('classpath:js/script.js');" + "increment(5)");
Assert.assertEquals(6, ((Double) loadResult).intValue());
Object math = engine.eval("var math = loadWithNewGlobal('classpath:js/math_module.js');" + "math.increment(5);");
Assert.assertEquals(6.0, math);
}
}