diff --git a/practice-gradle/app/build.gradle.kts b/practice-gradle/app/build.gradle.kts
index 8ce74f5..08166b3 100644
--- a/practice-gradle/app/build.gradle.kts
+++ b/practice-gradle/app/build.gradle.kts
@@ -1,3 +1,5 @@
+import com.github.spotbugs.snom.SpotBugsTask
+
 /*
  * This file was generated by the Gradle 'init' task.
  *
@@ -9,6 +11,8 @@ plugins {
     // Apply the application plugin to add support for building a CLI application in Java.
     application
     id("com.diffplug.spotless") version "7.0.3"
+    jacoco
+    id("com.github.spotbugs") version "6.1.10"
 }
 
 repositories {
@@ -18,11 +22,28 @@ repositories {
 
 spotless{
     java {
-        googleJavaFormat("1.20.0").aosp()
+        googleJavaFormat("1.20.0")
+            .aosp()
         target("src/**/*.java")
+
+        importOrder("java|javax", "org", "com.mycorp", "", "\\#")
+        removeUnusedImports()
+
+        trimTrailingWhitespace()
+        endWithNewline()
     }
 }
 
+jacoco {
+    toolVersion = "0.8.13"
+}
+
+spotbugs {
+    toolVersion.set("4.9.3")
+    effort.set(com.github.spotbugs.snom.Effort.MAX)
+    reportLevel.set(com.github.spotbugs.snom.Confidence.MEDIUM)
+}
+
 dependencies {
     // Use JUnit Jupiter for testing.
     testImplementation(libs.junit.jupiter)
@@ -31,6 +52,7 @@ dependencies {
 
     // This dependency is used by the application.
     implementation(libs.guava)
+    testImplementation("org.assertj:assertj-core:3.27.3")
 }
 
 // Apply a specific Java toolchain to ease working on different environments.
@@ -48,4 +70,42 @@ application {
 tasks.named<Test>("test") {
     // Use JUnit Platform for unit tests.
     useJUnitPlatform()
+    finalizedBy(tasks.jacocoTestReport)
+}
+
+tasks.jacocoTestReport {
+    dependsOn(tasks.test)
+    reports {
+        html.required.set(true)
+        xml.required.set(true)
+    }
 }
+
+tasks.named<SpotBugsTask>("spotbugsMain") {
+
+    // 필요 시 커스텀 클래스 경로 지정
+    // classes.setFrom(sourceSets.main.get().output)
+
+    reports.apply {
+        /* HTML */
+        create("html") {
+            required.set(true)
+            outputLocation.set(
+                layout.buildDirectory.file("reports/spotbugs/${name}.html")
+            )
+            setStylesheet("fancy-hist.xsl")
+        }
+
+        /* XML — SonarQube, CI 파싱용 */
+        create("xml") {
+            required.set(true)
+        }
+
+        /* SARIF — GitHub Code Scanning 용 (필요 없으면 true→false) */
+        create("sarif") {
+            required.set(true)
+        }
+    }
+}
+
+tasks.check { dependsOn("spotbugsMain") }
\ No newline at end of file
diff --git a/practice-gradle/app/src/main/java/org/example/item/Item.java b/practice-gradle/app/src/main/java/org/example/item/Item.java
new file mode 100644
index 0000000..a5f46b7
--- /dev/null
+++ b/practice-gradle/app/src/main/java/org/example/item/Item.java
@@ -0,0 +1,26 @@
+package org.example.item;
+
+public class Item {
+
+    private int cnt = 0;
+
+    public int getCnt() {
+        return cnt;
+    }
+
+    public void increaseCnt() {
+        cnt++;
+    }
+
+    public void decreaseCnt() {
+        cnt--;
+    }
+
+    public String toString() {
+        return cnt + "";
+    }
+
+    public void setCnt(int cnt) {
+        this.cnt = cnt;
+    }
+}
diff --git a/practice-gradle/app/src/test/java/org/example/AppTest.java b/practice-gradle/app/src/test/java/org/example/AppTest.java
index f5ce33d..a1d15c8 100644
--- a/practice-gradle/app/src/test/java/org/example/AppTest.java
+++ b/practice-gradle/app/src/test/java/org/example/AppTest.java
@@ -4,10 +4,12 @@
 package org.example;
 
 import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 class AppTest {
-    @Test void appHasAGreeting() {
+    @Test
+    void appHasAGreeting() {
         App classUnderTest = new App();
         assertNotNull(classUnderTest.getGreeting(), "app should have a greeting");
     }
diff --git a/practice-gradle/app/src/test/java/org/example/item/ItemTest.java b/practice-gradle/app/src/test/java/org/example/item/ItemTest.java
new file mode 100644
index 0000000..71497e5
--- /dev/null
+++ b/practice-gradle/app/src/test/java/org/example/item/ItemTest.java
@@ -0,0 +1,50 @@
+package org.example.item;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+public class ItemTest {
+
+    @Test
+    void getTest() {
+        // given
+        Item item = new Item();
+
+        // then
+        assertThat(item.getCnt()).isEqualTo(0);
+    }
+
+    @Test
+    void incrementTest() {
+        // given
+        Item item = new Item();
+
+        // when
+        item.increaseCnt();
+
+        assertThat(item.getCnt()).isEqualTo(1);
+    }
+
+    @Test
+    void decrementTest() {
+        Item item = new Item();
+
+        item.decreaseCnt();
+
+        assertThat(item.getCnt()).isEqualTo(-1);
+    }
+
+    @Test
+    void equalsTest() {
+        Item item = new Item();
+        assertThat(item).isEqualTo(item);
+    }
+
+    @Test
+    void setTest() {
+        Item item = new Item();
+        item.setCnt(3);
+        assertThat(item.getCnt()).isEqualTo(3);
+    }
+}