Day090

README.adoc

@@ -3449,4 +3449,34 @@ class MethodValidator {
         }
     }
 }
+----
+
+== Day 90 - Using `StringJoiner`.
+[source,java]
+----
+package com.thegreatapi.ahundreddaysofjava.day090;
+
+import java.util.StringJoiner;
+
+public class Day090 {
+
+    public static void main(String[] args) {
+        var stringJoiner = new StringJoiner(";");
+
+        stringJoiner.add("this");
+        stringJoiner.add("is");
+        stringJoiner.add("a");
+        stringJoiner.add("StringJoiner");
+
+        stringJoiner.add("and")
+                    .add("it")
+                    .add("has")
+                    .add("a")
+                    .add("fluent")
+                    .add("api");
+
+        // Prints: this;is;a;StringJoiner;and;it;has;a;fluent;api
+        System.out.println(stringJoiner);
+    }
+}
 ----

days/day090/pom.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>days</artifactId>
+        <groupId>com.thegreatapi.100daysofjava</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>day090</artifactId>
+
+    <properties>
+        <maven.compiler.source>16</maven.compiler.source>
+        <maven.compiler.target>16</maven.compiler.target>
+    </properties>
+
+</project>

days/day090/src/main/java/com/thegreatapi/ahundreddaysofjava/day090/Day090.java

@@ -0,0 +1,25 @@
+package com.thegreatapi.ahundreddaysofjava.day090;
+
+import java.util.StringJoiner;
+
+public class Day090 {
+
+    public static void main(String[] args) {
+        var stringJoiner = new StringJoiner(";");
+
+        stringJoiner.add("this");
+        stringJoiner.add("is");
+        stringJoiner.add("a");
+        stringJoiner.add("StringJoiner");
+
+        stringJoiner.add("and")
+                    .add("it")
+                    .add("has")
+                    .add("a")
+                    .add("fluent")
+                    .add("api");
+
+        // Prints: this;is;a;StringJoiner;and;it;has;a;fluent;api
+        System.out.println(stringJoiner);
+    }
+}

days/pom.xml

@@ -100,6 +100,7 @@
         <module>day087</module>
         <module>day088</module>
         <module>day089</module>
+        <module>day090</module>
     </modules>
 
 </project>