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MohamedHelmyKassabMohamedHelmyKassab
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This PR related to the article BAEL-7023 (#14993)
* Update pom.xml * This commit related to the article BAEL-7023 This commit aims to add a test class 'CenteringTextUnitTest.java' proposing several ways to center text in Java.
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‎core-java-modules/core-java-string-operations-7/README.md‎

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### Relevant Articles:

‎core-java-modules/core-java-string-operations-7/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>core-java-string-operations-7</artifactId>
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<name>core-java-string-operations-7</name>
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<packaging>jar</packaging>
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<parent>
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<groupId>com.baeldung.core-java-modules</groupId>
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<artifactId>core-java-modules</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<dependencies>
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-lang3</artifactId>
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<version>${apache.commons.lang3.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-text</artifactId>
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<version>${commons-text.version}</version>
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</dependency>
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<dependency>
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<groupId>org.liquibase</groupId>
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<artifactId>liquibase-core</artifactId>
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<version>4.9.1</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<version>5.8.1</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.liquibase</groupId>
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<artifactId>liquibase-core</artifactId>
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<version>4.9.1</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.13.2</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>${maven.compiler.source}</source>
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<target>${maven.compiler.target}</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<properties>
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<maven.compiler.source>11</maven.compiler.source>
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<maven.compiler.target>11</maven.compiler.target>
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<apache.commons.lang3.version>3.12.0</apache.commons.lang3.version>
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<commons-text.version>1.10.0</commons-text.version>
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</properties>
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</project>

‎core-java-modules/core-java-string-operations-7/src/test/java/com/baeldung/centertext/CenteringTextUnitTest.java‎

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package com.baeldung.centertext;
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import liquibase.repackaged.org.apache.commons.lang3.StringUtils;
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import org.junit.Assert;
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import org.junit.jupiter.api.Test;
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import static org.junit.Assert.assertEquals;
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public class CenteringTextUnitTest {
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@Test
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public void givenTextAndTotalWidth_whenUsingStringFormat_thenTextIsCentered() {
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String text = "Centered Text";
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int totalWidth = 20;
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int padding = (totalWidth - text.length()) / 2;
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String centeredText = String.format("%" + padding + "s%s%" + padding + "s", "", text, "");
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String expectedCenteredText = " Centered Text ";
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Assert.assertEquals("Centered Text", expectedCenteredText, centeredText);
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}
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@Test
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public void givenTextAndTotalWidth_whenCenterUsingStringBuilder_thenTextIsCentered() {
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String text = "Centered Text";
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int width = 20;
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int padding = (width - text.length()) / 2;
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StringBuilder centeredText = new StringBuilder();
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for (int i = 0; i < padding; i++) {
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centeredText.append(" ");
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}
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centeredText.append(text);
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for (int i = 0; i < padding; i++) {
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centeredText.append(" ");
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}
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String centeredTextString = centeredText.toString();
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String expectedCenteredText = " Centered Text ";
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Assert.assertEquals("Centered Text", expectedCenteredText, centeredTextString);
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}
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@Test
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public void givenTextAndTotalWidth_whenUsingStringUtilsCenterMethod_thenTextIsCentered() {
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String text = "Centered Text";
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int width = 20;
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String centeredText = StringUtils.center(text, width);
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String expectedCenteredText = StringUtils.center("Centered Text", width);
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assertEquals("Centered Text", expectedCenteredText, centeredText);
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}
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}

‎core-java-modules/pom.xml‎

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<module>core-java-string-operations</module>
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<module>core-java-string-operations-2</module>
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<module>core-java-string-operations-6</module>
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<module>core-java-string-operations-7</module>
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<module>core-java-regex</module>
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<module>core-java-regex-2</module>
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<module>core-java-uuid</module>

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