From d67b026d29b63001c48dd6e99b4fec15a2662122 Mon Sep 17 00:00:00 2001
From: Pazis <pazis.x@gmail.com>
Date: Wed, 3 Jul 2019 05:50:41 +0430
Subject: [PATCH] BAEL-2962 Java Multi-line String (#7166)

* added readme

* hexagonal architecture implemented

* Java Multiline String
---
 .../string/multiline/MultiLineString.java     | 67 +++++++++++++++++++
 .../src/main/resources/stephenking.txt        |  4 ++
 .../string/MultiLineStringUnitTest.java       | 22 ++++++
 3 files changed, 93 insertions(+)
 create mode 100644 java-strings-2/src/main/java/com/baeldung/string/multiline/MultiLineString.java
 create mode 100644 java-strings-2/src/main/resources/stephenking.txt
 create mode 100644 java-strings-2/src/test/java/com/baeldung/string/MultiLineStringUnitTest.java

diff --git a/java-strings-2/src/main/java/com/baeldung/string/multiline/MultiLineString.java b/java-strings-2/src/main/java/com/baeldung/string/multiline/MultiLineString.java
new file mode 100644
index 0000000000..1bde2dcb63
--- /dev/null
+++ b/java-strings-2/src/main/java/com/baeldung/string/multiline/MultiLineString.java
@@ -0,0 +1,67 @@
+package com.baeldung.string.multiline;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import com.google.common.base.Joiner;
+import com.google.common.collect.ImmutableList;
+
+public class MultiLineString {
+    
+    String newLine = System.getProperty("line.separator");
+    
+    public String stringConcatenation() {
+        return "Get busy living"
+                .concat(newLine)
+                .concat("or")
+                .concat(newLine)
+                .concat("get busy dying.")
+                .concat(newLine)
+                .concat("--Stephen King");
+    }
+    
+    public String stringJoin() {
+        return String.join(newLine,
+                           "Get busy living",
+                           "or",
+                           "get busy dying.",
+                           "--Stephen King");
+    }
+    
+    public String stringBuilder() {
+        return new StringBuilder()
+                .append("Get busy living")
+                .append(newLine)
+                .append("or")
+                .append(newLine)
+                .append("get busy dying.")
+                .append(newLine)
+                .append("--Stephen King")
+                .toString();
+    }
+    
+    public String stringWriter() {
+        StringWriter stringWriter = new StringWriter();
+        PrintWriter printWriter = new PrintWriter(stringWriter);
+        printWriter.println("Get busy living");
+        printWriter.println("or");
+        printWriter.println("get busy dying.");
+        printWriter.println("--Stephen King");
+        return stringWriter.toString();
+    }
+    
+    public String guavaJoiner() {
+        return Joiner.on(newLine).join(ImmutableList.of("Get busy living",
+            "or",
+            "get busy dying.",
+            "--Stephen King"));
+    }
+    
+    public String loadFromFile() throws IOException {
+        return new String(Files.readAllBytes(Paths.get("src/main/resources/stephenking.txt")));
+    }
+
+}
diff --git a/java-strings-2/src/main/resources/stephenking.txt b/java-strings-2/src/main/resources/stephenking.txt
new file mode 100644
index 0000000000..f31b4a28bd
--- /dev/null
+++ b/java-strings-2/src/main/resources/stephenking.txt
@@ -0,0 +1,4 @@
+Get busy living
+or
+get busy dying.
+--Stephen King
\ No newline at end of file
diff --git a/java-strings-2/src/test/java/com/baeldung/string/MultiLineStringUnitTest.java b/java-strings-2/src/test/java/com/baeldung/string/MultiLineStringUnitTest.java
new file mode 100644
index 0000000000..b458fae79b
--- /dev/null
+++ b/java-strings-2/src/test/java/com/baeldung/string/MultiLineStringUnitTest.java
@@ -0,0 +1,22 @@
+package com.baeldung.string;
+
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+
+import com.baeldung.string.multiline.MultiLineString;
+
+public class MultiLineStringUnitTest {
+
+    
+    @Test
+    public void whenCompareMultiLineStrings_thenTheyAreAllTheSame() throws IOException {
+        MultiLineString ms = new MultiLineString();
+        assertEquals(ms.stringConcatenation(), ms.stringJoin());
+        assertEquals(ms.stringJoin(), ms.stringBuilder());
+        assertEquals(ms.stringBuilder(), ms.guavaJoiner());
+        assertEquals(ms.guavaJoiner(), ms.loadFromFile());
+    }
+    
+}