Move articles out of java-strings part4

core-java-modules/core-java-string-operations-2/README.md

@@ -0,0 +1,11 @@
+## Java String Operations
+
+This module contains articles about string operations.
+
+### Relevant Articles:
+- [Concatenating Strings In Java](https://www.baeldung.com/java-strings-concatenation)
+- [Checking for Empty or Blank Strings in Java](https://www.baeldung.com/java-blank-empty-strings)
+- [String Initialization in Java](https://www.baeldung.com/java-string-initialization)
+- [String toLowerCase and toUpperCase Methods in Java](https://www.baeldung.com/java-string-convert-case)
+- [Java String equalsIgnoreCase()](https://www.baeldung.com/java-string-equalsignorecase)
+- More articles: [[<-- prev]](../core-java-string-operations)

core-java-modules/core-java-string-operations-2/pom.xml

@@ -0,0 +1,81 @@
+<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">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-string-operations-2</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-operations-2</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+            <version>${validation-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate.validator</groupId>
+            <artifactId>hibernate-validator</artifactId>
+            <version>${hibernate-validator.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.el</groupId>
+            <artifactId>javax.el-api</artifactId>
+            <version>${javax.el-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.web</groupId>
+            <artifactId>javax.el</artifactId>
+            <version>${javax.el.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-library</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-operations-2</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <assertj.version>3.6.1</assertj.version>
+        <validation-api.version>2.0.0.Final</validation-api.version>
+        <commons-lang3.version>3.8.1</commons-lang3.version>
+        <guava.version>27.0.1-jre</guava.version>
+        <hibernate-validator.version>6.0.2.Final</hibernate-validator.version>
+        <javax.el-api.version>3.0.0</javax.el-api.version>
+        <javax.el.version>2.2.6</javax.el.version>
+    </properties>
+
+</project>

java-strings-2/src/main/java/com/baeldung/string/emptystrings/EmptyStringCheck.java → core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/EmptyStringCheck.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 class EmptyStringCheck {
 

java-strings-2/src/main/java/com/baeldung/string/emptystrings/Java5EmptyStringCheck.java → core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/Java5EmptyStringCheck.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 class Java5EmptyStringCheck {
 

java-strings-2/src/main/java/com/baeldung/string/emptystrings/PlainJavaBlankStringCheck.java → core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/PlainJavaBlankStringCheck.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 class PlainJavaBlankStringCheck {
 

java-strings-2/src/main/java/com/baeldung/string/emptystrings/SomeClassWithValidations.java → core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/SomeClassWithValidations.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 import javax.validation.constraints.Pattern;
 

java-strings-2/src/test/java/com/baeldung/string/changecase/ToLowerCaseUnitTest.java → core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/changecase/ToLowerCaseUnitTest.java

@@ -1,29 +1,29 @@
-package com.baeldung.string.changecase;
-
-import static org.junit.Assert.assertEquals;
-
-import java.util.Locale;
-
-import org.junit.Test;
-
-public class ToLowerCaseUnitTest {
-
-    private static final Locale TURKISH = new Locale("tr");
-    private String name = "John Doe";
-    private String foreignUppercase = "\u0049";
-
-    @Test
-    public void givenMixedCaseString_WhenToLowerCase_ThenResultIsLowerCase() {
-        assertEquals("john doe", name.toLowerCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToLowerCaseWithoutLocale_ThenResultIsLowerCase() {
-        assertEquals("\u0069", foreignUppercase.toLowerCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToLowerCaseWithLocale_ThenResultIsLowerCase() {
-        assertEquals("\u0131", foreignUppercase.toLowerCase(TURKISH));
-    }
-}
+package com.baeldung.changecase;
+
+import org.junit.Test;
+
+import java.util.Locale;
+
+import static org.junit.Assert.assertEquals;
+
+public class ToLowerCaseUnitTest {
+
+    private static final Locale TURKISH = new Locale("tr");
+    private String name = "John Doe";
+    private String foreignUppercase = "\u0049";
+
+    @Test
+    public void givenMixedCaseString_WhenToLowerCase_ThenResultIsLowerCase() {
+        assertEquals("john doe", name.toLowerCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToLowerCaseWithoutLocale_ThenResultIsLowerCase() {
+        assertEquals("\u0069", foreignUppercase.toLowerCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToLowerCaseWithLocale_ThenResultIsLowerCase() {
+        assertEquals("\u0131", foreignUppercase.toLowerCase(TURKISH));
+    }
+}

java-strings-2/src/test/java/com/baeldung/string/changecase/ToUpperCaseUnitTest.java → core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/changecase/ToUpperCaseUnitTest.java

@@ -1,29 +1,29 @@
-package com.baeldung.string.changecase;
-
-import static org.junit.Assert.assertEquals;
-
-import java.util.Locale;
-
-import org.junit.Test;
-
-public class ToUpperCaseUnitTest {
-
-    private static final Locale TURKISH = new Locale("tr");
-    private String name = "John Doe";
-    private String foreignLowercase = "\u0069";
-
-    @Test
-    public void givenMixedCaseString_WhenToUpperCase_ThenResultIsUpperCase() {
-        assertEquals("JOHN DOE", name.toUpperCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToUpperCaseWithoutLocale_ThenResultIsUpperCase() {
-        assertEquals("\u0049", foreignLowercase.toUpperCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToUpperCaseWithLocale_ThenResultIsUpperCase() {
-        assertEquals("\u0130", foreignLowercase.toUpperCase(TURKISH));
-    }
-}
+package com.baeldung.changecase;
+
+import org.junit.Test;
+
+import java.util.Locale;
+
+import static org.junit.Assert.assertEquals;
+
+public class ToUpperCaseUnitTest {
+
+    private static final Locale TURKISH = new Locale("tr");
+    private String name = "John Doe";
+    private String foreignLowercase = "\u0069";
+
+    @Test
+    public void givenMixedCaseString_WhenToUpperCase_ThenResultIsUpperCase() {
+        assertEquals("JOHN DOE", name.toUpperCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToUpperCaseWithoutLocale_ThenResultIsUpperCase() {
+        assertEquals("\u0049", foreignLowercase.toUpperCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToUpperCaseWithLocale_ThenResultIsUpperCase() {
+        assertEquals("\u0130", foreignLowercase.toUpperCase(TURKISH));
+    }
+}

java-strings-2/src/test/java/com/baeldung/string/emptystrings/EmptyStringsUnitTest.java → core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/emptystrings/EmptyStringsUnitTest.java

@@ -1,21 +1,17 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
-import static org.hamcrest.Matchers.iterableWithSize;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
-
-import java.util.Set;
+import com.google.common.base.Strings;
+import org.apache.commons.lang3.StringUtils;
+import org.junit.Test;
 
 import javax.validation.ConstraintViolation;
 import javax.validation.Validation;
 import javax.validation.Validator;
 import javax.validation.ValidatorFactory;
+import java.util.Set;
 
-import org.apache.commons.lang3.StringUtils;
-import org.junit.Test;
-
-import com.google.common.base.Strings;
+import static org.hamcrest.Matchers.iterableWithSize;
+import static org.junit.Assert.*;
 
 public class EmptyStringsUnitTest {
 

java-strings-3/src/test/java/com/baeldung/string/equalsIgnoreCase/StringEqualsIgnoreCaseUnitTest.java → core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/equalsIgnoreCase/StringEqualsIgnoreCaseUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.equalsIgnoreCase;
+package com.baeldung.equalsIgnoreCase;
 
 import org.apache.commons.lang3.StringUtils;
 import org.junit.Test;

java-strings-2/src/test/java/com/baeldung/initialization/StringInitializationUnitTest.java → core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/initialization/StringInitializationUnitTest.java

@@ -1,11 +1,9 @@
 package com.baeldung.initialization;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.assertFalse;
-
 import org.junit.Test;
 
+import static org.junit.Assert.*;
+
 public class StringInitializationUnitTest {
 
     private String fieldString;

java-strings-2/src/test/java/com/baeldung/StringConcatenationUnitTest.java → core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/stringconcatenation/StringConcatenationUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung;
+package com.baeldung.stringconcatenation;
 
 import org.junit.Test;
 

core-java-modules/core-java-string-operations/README.md

@@ -0,0 +1,16 @@
+## Java String Operations
+
+This module contains articles about string operations.
+
+### Relevant Articles:
+- [Comparing Strings in Java](https://www.baeldung.com/java-compare-strings)
+- [Check If a String Is Numeric in Java](https://www.baeldung.com/java-check-string-number)
+- [Get Substring from String in Java](https://www.baeldung.com/java-substring)
+- [Split a String in Java](https://www.baeldung.com/java-split-string)
+- [Common String Operations in Java](https://www.baeldung.com/java-string-operations)
+- [Java toString() Method](https://www.baeldung.com/java-tostring)
+- [String Operations with Java Streams](https://www.baeldung.com/java-stream-operations-on-strings)
+- [Adding a Newline Character to a String in Java](https://www.baeldung.com/java-string-newline)
+- [Check If a String Contains a Substring](https://www.baeldung.com/java-string-contains-substring)
+- [Java Base64 Encoding and Decoding](https://www.baeldung.com/java-base64-encode-and-decode)
+- More articles: [[next -->]](../core-java-string-operations-2)

core-java-modules/core-java-string-operations/pom.xml

@@ -0,0 +1,66 @@
+<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">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-string-operations</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-operations</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh-core.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${jmh-generator.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-operations</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <commons-lang3.version>3.8.1</commons-lang3.version>
+        <assertj.version>3.6.1</assertj.version>
+        <commons-codec.version>1.10</commons-codec.version>
+    </properties>
+
+</project>

java-strings-ops/src/main/java/com/baeldung/string/isnumeric/Benchmarking.java → core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/Benchmarking.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import java.util.concurrent.TimeUnit;
 

java-strings-ops/src/main/java/com/baeldung/string/isnumeric/CheckIntegerInput.java → core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/CheckIntegerInput.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import java.util.Scanner;
 

java-strings-ops/src/main/java/com/baeldung/string/isnumeric/IsNumeric.java → core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/IsNumeric.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.math.NumberUtils;

java-strings-ops/src/main/java/com/baeldung/string/isnumeric/IsNumericDriver.java → core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/IsNumericDriver.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import org.apache.log4j.Logger;