Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

java-strings-ops/src/main/resources/log4j.properties

@@ -0,0 +1,8 @@
+# Root logger option
+log4j.rootLogger=DEBUG, stdout
+
+# Redirect log messages to console
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

java-strings-ops/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

java-strings-ops/src/test/java/com/baeldung/stringpool/StringPoolUnitTest.java

@@ -0,0 +1,44 @@
+package com.baeldung.stringpool;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+
+public class StringPoolUnitTest {
+
+    @Test
+    public void whenCreatingConstantStrings_thenTheirAddressesAreEqual() {
+        String constantString1 = "Baeldung";
+        String constantString2 = "Baeldung";
+
+        assertThat(constantString1).isSameAs(constantString2);
+    }
+
+    @Test
+    public void whenCreatingStringsWithTheNewOperator_thenTheirAddressesAreDifferent() {
+        String newString1 = new String("Baeldung");
+        String newString2 = new String("Baeldung");
+
+        assertThat(newString1).isNotSameAs(newString2);
+    }
+
+    @Test
+    public void whenComparingConstantAndNewStrings_thenTheirAddressesAreDifferent() {
+        String constantString = "Baeldung";
+        String newString = new String("Baeldung");
+
+        assertThat(constantString).isNotSameAs(newString);
+    }
+
+    @Test
+    public void whenInterningAStringWithIdenticalValueToAnother_thenTheirAddressesAreEqual() {
+        String constantString = "interned Baeldung";
+        String newString = new String("interned Baeldung");
+
+        assertThat(constantString).isNotSameAs(newString);
+
+        String internedString = newString.intern();
+
+        assertThat(constantString).isSameAs(internedString);
+    }
+}

java-strings-ops/src/test/resources/.gitignore

@@ -0,0 +1,13 @@
+*.class
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+
+# Packaged files #
+*.jar
+*.war
+*.ear