[JAVA23][JAVA24] - Adding feature about Java 23 and 24.

ThiagoBfim · ThiagoBfim · commit 48a8f7eaf501 · 2025-03-22T16:17:20.000-03:00
Removing String Template
diff --git a/README.md b/README.md
@@ -51,4 +51,9 @@ Here I will include some news about each version of Java, perhaps the most impor
 - [x] Java 22
 - Stream Gatherers
 - Statements before super(...)
-
+- [x] Java 23
+- Primitive Types in Patterns, instanceof, and switch (Preview)
+- [x] Java 24
+- Stream Gatherers final version
+- [ ] Java 25
+- WIP
diff --git a/java-improvements/pom.xml b/java-improvements/pom.xml
@@ -15,8 +15,8 @@
     <version>1.0-SNAPSHOT</version>
 
     <properties>
-        <maven.compiler.source>22</maven.compiler.source>
-        <maven.compiler.target>22</maven.compiler.target>
+        <maven.compiler.source>24</maven.compiler.source>
+        <maven.compiler.target>24</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <build>
@@ -25,8 +25,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>22</source>
-                    <target>22</target>
+                    <source>24</source>
+                    <target>24</target>
                     <compilerArgs>--enable-preview</compilerArgs>
                 </configuration>
             </plugin>
diff --git a/java-improvements/src/main/java/com/bomfim/improvements/StringJson.java b/java-improvements/src/main/java/com/bomfim/improvements/StringJson.java
@@ -65,24 +65,24 @@ public String writeJsonTextBlock(PokemonRecord pokemon) {
                         pokemon.species());
     }
 
-    /**
-     * Using String template: JEP 430: String Templates (Preview)
-     * From Java 21
-     *
-     * @param pokemon pokemon to display in Json
-     * @return json.
-     */
-    public String writePokemonStringTemplate(PokemonRecord pokemon) {
-        return STR. """
-                {
-                  "id": \{ pokemon.id() },
-                  "name": "\{ pokemon.name() }",
-                  "type": [
-                    "\{ String.join("\",\"", pokemon.type()) }"
-                  ],
-                  "species": "\{ pokemon.species() }",
-                }
-                """ ;
-    }
+//    /**
+//     * Using String template: JEP 430: String Templates (Preview)
+//     * From Java 21
+//     *
+//     * @param pokemon pokemon to display in Json
+//     * @return json.
+//     */
+//    public String writePokemonStringTemplate(PokemonRecord pokemon) {
+//        return STR. """
+//                {
+//                  "id": \{ pokemon.id() },
+//                  "name": "\{ pokemon.name() }",
+//                  "type": [
+//                    "\{ String.join("\",\"", pokemon.type()) }"
+//                  ],
+//                  "species": "\{ pokemon.species() }",
+//                }
+//                """ ;
+//    }
 
 }
diff --git a/java-improvements/src/main/java/com/bomfim/improvements/StringPoem.java b/java-improvements/src/main/java/com/bomfim/improvements/StringPoem.java
@@ -81,31 +81,31 @@ public String writePoemTextBlock(String author) {
                 .concat(author);
     }
 
-    /**
-     * Using String template: JEP 430: String Templates (Preview)
-     * From Java 21
-     *
-     * @param author author from the poem.
-     * @return poem.
-     */
-    public String writePoemStringTemplate(String author) {
-        return STR."""
-                Over hill, over dale,
-                Thorough bush, thorough brier,
-                Over park, over pale,
-                Thorough flood, thorough fire!
-                I do wander everywhere,
-                Swifter than the moon's sphere;
-                And I serve the Fairy Queen,
-                To dew her orbs upon the green;
-                The cowslips tall her pensioners be;
-                In their gold coats spots you see;
-                Those be rubies, fairy favours;
-                In those freckles live their savours;
-                I must go seek some dewdrops here,
-                And hang a pearl in every cowslip's ear.
-                - \{author}
-                """;
-    }
+//    /**
+//     * Using String template: JEP 430: String Templates (Preview)
+//     * From Java 21
+//     *
+//     * @param author author from the poem.
+//     * @return poem.
+//     */
+//    public String writePoemStringTemplate(String author) {
+//        return STR."""
+//                Over hill, over dale,
+//                Thorough bush, thorough brier,
+//                Over park, over pale,
+//                Thorough flood, thorough fire!
+//                I do wander everywhere,
+//                Swifter than the moon's sphere;
+//                And I serve the Fairy Queen,
+//                To dew her orbs upon the green;
+//                The cowslips tall her pensioners be;
+//                In their gold coats spots you see;
+//                Those be rubies, fairy favours;
+//                In those freckles live their savours;
+//                I must go seek some dewdrops here,
+//                And hang a pearl in every cowslip's ear.
+//                - \{author}
+//                """;
+//    }
 
 }
diff --git a/java-improvements/src/test/java/com/bomfim/improvements/PokemonRecordPatternTest.java b/java-improvements/src/test/java/com/bomfim/improvements/PokemonRecordPatternTest.java
@@ -79,7 +79,7 @@ void printPokeball2OldNPE() {
         var pokeballEmpty = new Pokeball("Ultra Ball", null);
         assertThatThrownBy(() -> pokemonRecordPattern.printPokeball2OldNPE(pokeballEmpty))
                 .isInstanceOf(NullPointerException.class)
-                .hasMessage("Cannot invoke \"com.bomfim.strings.RecordPokemon$PokemonRecord.name()\" because \"pokeball.pokemon\" is null");
+                .hasMessage("Cannot invoke \"com.bomfim.improvements.RecordPokemon$PokemonRecord.name()\" because \"pokeball.pokemon\" is null");
     }
 
     @Test
diff --git a/java-improvements/src/test/java/com/bomfim/improvements/StringJsonTest.java b/java-improvements/src/test/java/com/bomfim/improvements/StringJsonTest.java
@@ -63,18 +63,18 @@ void writeJsonTextBlock() {
                         """);
     }
 
-    @Test
-    void writePokemonStringTemplate() {
-        Assertions.assertThat(stringJson.writePokemonStringTemplate(pokemon))
-                .isEqualTo("""
-                        {
-                          "id": 1,
-                          "name": "Bulbasaur",
-                          "type": [
-                            "Grass","Poison"
-                          ],
-                          "species": "Seed Pokémon",
-                        }
-                        """);
-    }
+//    @Test
+//    void writePokemonStringTemplate() {
+//        Assertions.assertThat(stringJson.writePokemonStringTemplate(pokemon))
+//                .isEqualTo("""
+//                        {
+//                          "id": 1,
+//                          "name": "Bulbasaur",
+//                          "type": [
+//                            "Grass","Poison"
+//                          ],
+//                          "species": "Seed Pokémon",
+//                        }
+//                        """);
+//    }
 }
diff --git a/java-improvements/src/test/java/com/bomfim/improvements/StringPoemTest.java b/java-improvements/src/test/java/com/bomfim/improvements/StringPoemTest.java
@@ -30,9 +30,9 @@ void writePoemTextBlock() {
                 .contains("Shakespeare");
     }
 
-    @org.junit.jupiter.api.Test
-    void writePoemStringTemplate() {
-        Assertions.assertThat(stringPoem.writePoemStringTemplate("Shakespeare"))
-                .contains("Shakespeare");
-    }
+//    @org.junit.jupiter.api.Test
+//    void writePoemStringTemplate() {
+//        Assertions.assertThat(stringPoem.writePoemStringTemplate("Shakespeare"))
+//                .contains("Shakespeare");
+//    }
 }
diff --git a/java-news-module/src/main/java/com/bomfim/java21/JsonStringTemplate.java b/java-news-module/src/main/java/com/bomfim/java21/JsonStringTemplate.java
@@ -2,27 +2,32 @@
 
 import java.util.List;
 
+/***
+ * Remove the String Templates preview feature: https://bugs.openjdk.org/browse/JDK-8329949
+ */
+
+
 public class JsonStringTemplate {
 
-    /**
-     * Using String template: JEP 430: String Templates (Preview)
-     * From Java 21
-     *
-     * @param pokemon pokemon to display in Json
-     * @return json.
-     */
-    public String writePokemonStringTemplate(PokemonRecord pokemon) {
-        return STR. """
-                {
-                  "id": \{ pokemon.id() },
-                  "name": "\{ pokemon.name() }",
-                  "type": [
-                    "\{ String.join("\",\"", pokemon.type()) }"
-                  ],
-                  "species": "\{ pokemon.species() }",
-                }
-                """ ;
-    }
+//    /**
+//     * Using String template: JEP 430: String Templates (Preview)
+//     * From Java 21
+//     *
+//     * @param pokemon pokemon to display in Json
+//     * @return json.
+//     */
+//    public String writePokemonStringTemplate(PokemonRecord pokemon) {
+//        return STR. """
+//                {
+//                  "id": \{ pokemon.id() },
+//                  "name": "\{ pokemon.name() }",
+//                  "type": [
+//                    "\{ String.join("\",\"", pokemon.type()) }"
+//                  ],
+//                  "species": "\{ pokemon.species() }",
+//                }
+//                """ ;
+//    }
 
     public record PokemonRecord(Integer id, String name, List<String> type, String species) {
     }
diff --git a/java-news-module/src/main/java/com/bomfim/java23/PrimitiveInstanceOf.java b/java-news-module/src/main/java/com/bomfim/java23/PrimitiveInstanceOf.java
@@ -0,0 +1,19 @@
+package com.bomfim.java23;
+
+/**
+ * JEP 455: Primitive Types in Patterns, instanceof, and switch (Preview)
+ *
+ * https://openjdk.org/jeps/455
+ */
+public class PrimitiveInstanceOf {
+
+    public String getAgeRange(int age) {
+        return switch (age) {
+            case 0 -> throw new IllegalArgumentException("Wrong Age");
+            case int i when i <= 20 -> "KID";
+            case int i when i >= 21 && i<=50 -> "ADULT";
+            case int i when i >= 50 -> "OLDER";
+            default -> "N/A";
+        };
+    }
+}
diff --git a/java-news-module/src/main/java/com/bomfim/java24/StreamGatherFinal.java b/java-news-module/src/main/java/com/bomfim/java24/StreamGatherFinal.java
@@ -0,0 +1,24 @@
+package com.bomfim.java24;
+
+import java.util.List;
+import java.util.stream.Gatherer;
+
+/**
+ * JEP 485: Stream Gatherers
+ */
+public class StreamGatherFinal {
+
+    public List<Integer> getValuesUntilOddNumber(List<Integer> values) {
+        return values
+                .stream()
+                .gather(Gatherer.of((Gatherer.Integrator<Void, Integer, Integer>) (_, value, downstream) -> {
+                    if (value % 2 == 0) {
+                        downstream.push(value);
+                        return true;
+                    }
+                    return false;
+                }))
+                .toList();
+    }
+
+}
diff --git a/java-news-module/src/test/java/com/bomfim/java18/FinalizeDeprecatedTest.java b/java-news-module/src/test/java/com/bomfim/java18/FinalizeDeprecatedTest.java
@@ -34,13 +34,13 @@ void shouldExecuteMethodWithFinalize() {
 
         assertThat(outContent.toString()).contains("Finally",
                 "error",
-                "Thread:Thread[#1,main,5,main]")
+                "Thread:Thread[#3,main,5,main]")
                 .doesNotContain("The end");
 
         //Executed by another thread.
         //The use of finalization can lead to problems with security, performance, and reliability. See JEP 421  for discussion and alternatives.
         assertThat(outContent.toString()).contains("Finalize Deprecated",
-                "Thread:Thread[#5,Finalizer,8,system]");
+                "Thread:Thread[#7,Finalizer,8,system]");
 
     }
 }
diff --git a/java-news-module/src/test/java/com/bomfim/java21/JsonStringTemplateTest.java b/java-news-module/src/test/java/com/bomfim/java21/JsonStringTemplateTest.java
@@ -1,25 +1,20 @@
 package com.bomfim.java21;
 
-import org.assertj.core.api.Assertions;
-import org.junit.jupiter.api.Test;
-
-import java.util.List;
-
 class JsonStringTemplateTest {
 
-    @Test
-    void writePokemonStringTemplate() {
-        var pokemon = new JsonStringTemplate.PokemonRecord(1, "Bulbasaur", List.of("Grass", "Poison"), "Seed Pokémon");
-        Assertions.assertThat(new JsonStringTemplate().writePokemonStringTemplate(pokemon))
-                .isEqualTo("""
-                        {
-                          "id": 1,
-                          "name": "Bulbasaur",
-                          "type": [
-                            "Grass","Poison"
-                          ],
-                          "species": "Seed Pokémon",
-                        }
-                        """);
-    }
+//    @Test
+//    void writePokemonStringTemplate() {
+//        var pokemon = new JsonStringTemplate.PokemonRecord(1, "Bulbasaur", List.of("Grass", "Poison"), "Seed Pokémon");
+//        Assertions.assertThat(new JsonStringTemplate().writePokemonStringTemplate(pokemon))
+//                .isEqualTo("""
+//                        {
+//                          "id": 1,
+//                          "name": "Bulbasaur",
+//                          "type": [
+//                            "Grass","Poison"
+//                          ],
+//                          "species": "Seed Pokémon",
+//                        }
+//                        """);
+//    }
 }
diff --git a/java-news-module/src/test/java/com/bomfim/java22/StreamGatherersTestFinal.java b/java-news-module/src/test/java/com/bomfim/java22/StreamGatherersTestFinal.java
@@ -5,7 +5,7 @@
 
 import java.util.List;
 
-class StreamGatherersTest {
+class StreamGatherersTestFinal {
 
     @Test
     void getMaxSumOfConsecutiveElements() {
diff --git a/java-news-module/src/test/java/com/bomfim/java23/PrimitiveInstanceOfTest.java b/java-news-module/src/test/java/com/bomfim/java23/PrimitiveInstanceOfTest.java
@@ -0,0 +1,15 @@
+package com.bomfim.java23;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class PrimitiveInstanceOfTest {
+
+    @Test
+    void testAgeRange() {
+        var primitiveInstanceOf = new PrimitiveInstanceOf();
+        Assertions.assertThat(primitiveInstanceOf.getAgeRange(13)).isEqualTo("KID");
+        Assertions.assertThat(primitiveInstanceOf.getAgeRange(21)).isEqualTo("ADULT");
+        Assertions.assertThat(primitiveInstanceOf.getAgeRange(51)).isEqualTo("OLDER");
+    }
+}
diff --git a/java-news-module/src/test/java/com/bomfim/java24/StreamGatherTest.java b/java-news-module/src/test/java/com/bomfim/java24/StreamGatherTest.java
@@ -0,0 +1,16 @@
+package com.bomfim.java24;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+class StreamGatherTest {
+
+    @Test
+    void testGetValuesUntilOddNumber() {
+        StreamGatherFinal streamGatherFinal = new StreamGatherFinal();
+        Assertions.assertThat(streamGatherFinal.getValuesUntilOddNumber(List.of(1, 2, 3, 4, 5))).isEmpty();
+        Assertions.assertThat(streamGatherFinal.getValuesUntilOddNumber(List.of(2, 4, 5, 6))).containsExactly(2, 4);
+    }
+}
diff --git a/pom.xml b/pom.xml

Original file line number	Diff line number	Diff line change
`@@ -79,7 +79,7 @@ void printPokeball2OldNPE() {`
`79`	`79`	`var pokeballEmpty = new Pokeball("Ultra Ball", null);`
`80`	`80`	`assertThatThrownBy(() -> pokemonRecordPattern.printPokeball2OldNPE(pokeballEmpty))`
`81`	`81`	`.isInstanceOf(NullPointerException.class)`
`82`		`- .hasMessage("Cannot invoke \"com.bomfim.strings.RecordPokemon$PokemonRecord.name()\" because \"pokeball.pokemon\" is null");`
	`82`	`+ .hasMessage("Cannot invoke \"com.bomfim.improvements.RecordPokemon$PokemonRecord.name()\" because \"pokeball.pokemon\" is null");`
`83`	`83`	`}`
`84`	`84`
`85`	`85`	`@Test`
Original file line number	Diff line number	Diff line change
`@@ -30,9 +30,9 @@ void writePoemTextBlock() {`
`30`	`30`	`.contains("Shakespeare");`
`31`	`31`	`}`
`32`	`32`
`33`		`- @org.junit.jupiter.api.Test`
`34`		`- void writePoemStringTemplate() {`
`35`		`- Assertions.assertThat(stringPoem.writePoemStringTemplate("Shakespeare"))`
`36`		`- .contains("Shakespeare");`
`37`		`- }`
	`33`	`+// @org.junit.jupiter.api.Test`
	`34`	`+// void writePoemStringTemplate() {`
	`35`	`+// Assertions.assertThat(stringPoem.writePoemStringTemplate("Shakespeare"))`
	`36`	`+// .contains("Shakespeare");`
	`37`	`+// }`
`38`	`38`	`}`
Original file line number	Diff line number	Diff line change
`@@ -34,13 +34,13 @@ void shouldExecuteMethodWithFinalize() {`
`34`	`34`
`35`	`35`	`assertThat(outContent.toString()).contains("Finally",`
`36`	`36`	`"error",`
`37`		`- "Thread:Thread[#1,main,5,main]")`
	`37`	`+ "Thread:Thread[#3,main,5,main]")`
`38`	`38`	`.doesNotContain("The end");`
`39`	`39`
`40`	`40`	`//Executed by another thread.`
`41`	`41`	`//The use of finalization can lead to problems with security, performance, and reliability. See JEP 421 for discussion and alternatives.`
`42`	`42`	`assertThat(outContent.toString()).contains("Finalize Deprecated",`
`43`		`- "Thread:Thread[#5,Finalizer,8,system]");`
	`43`	`+ "Thread:Thread[#7,Finalizer,8,system]");`
`44`	`44`
`45`	`45`	`}`
`46`	`46`	`}`