docs: update Java support policy in README (11/17/21 CI-tested, 25 compatibility target)

Author: y-ok

.github/workflows/ci.yml

@@ -15,6 +15,11 @@ jobs:
   test-and-coverage:
     runs-on: ubuntu-latest
     timeout-minutes: 90
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ '11', '17', '21', '25' ]
+
     env:
       DOCKER_HOST: unix:///var/run/docker.sock
       TESTCONTAINERS_DOCKER_SOCKET_OVERRIDE: /var/run/docker.sock
@@ -24,11 +29,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up JDK 11
+      - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: '11'
+          java-version: ${{ matrix.java }}
           cache: maven
 
       - name: Verify Docker
@@ -38,15 +43,15 @@ jobs:
         run: mvn -B clean test
 
       - name: Upload JaCoCo XML as artifact
-        if: always()
+        if: always() && matrix.java == '21'
         uses: actions/upload-artifact@v4
         with:
           name: jacoco-report
           path: target/site/jacoco/jacoco.xml
           if-no-files-found: warn
 
       - name: Upload coverage to Codecov
-        if: always()
+        if: always() && matrix.java == '21'
         uses: codecov/codecov-action@v5
         with:
           files: target/site/jacoco/jacoco.xml

README.md

@@ -48,6 +48,8 @@ Most importantly, its greatest strength lies in the fact that **you no longer ne
 ## 前提
 
 * **Java 11+**（`JAVA_HOME` を JDK 11 以上に設定）
+  * **サポート対象（CIで動作確認）**: **Java 11 / 17 / 21（LTS）**
+  * **互換性ターゲット**: **Java 25（非LTS、CI必須対象外・動作報告歓迎）**
 * **Apache Maven 3.9+**（CLI ツールのビルドに使用します。例: 3.9.10）
 * **Oracle JDBC Driver**（`oracle.jdbc.OracleDriver`）
 * **OS**: Windows / macOS / Linux いずれでも可
@@ -59,6 +61,8 @@ Most importantly, its greatest strength lies in the fact that **you no longer ne
 ### Requirements
 
 * **Java 11+** (set `JAVA_HOME` to JDK 11 or later)
+  * **Supported (CI-tested):** **Java 11 / 17 / 21 (LTS)**
+  * **Compatibility target:** **Java 25 (non-LTS; not required in CI; bug reports welcome)**
 * **Apache Maven 3.9+** (used to build the CLI tool; e.g., 3.9.10)
 * **Oracle JDBC Driver** (`oracle.jdbc.OracleDriver`)
 * **OS**: Windows / macOS / Linux

pom.xml

@@ -40,7 +40,6 @@
 		<java.version>11</java.version>
 		<maven.compiler.source>${java.version}</maven.compiler.source>
 		<maven.compiler.target>${java.version}</maven.compiler.target>
-		<slf4j.version>1.7.30</slf4j.version>
 	</properties>
 	<profiles>
 	</profiles>
@@ -94,12 +93,6 @@
 			<artifactId>commons-lang3</artifactId>
 			<version>3.20.0</version>
 		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-simple</artifactId>
-			<version>2.0.17</version>
-			<scope>test</scope>
-		</dependency>
 		<!-- DBUnit -->
 		<dependency>
 			<groupId>org.dbunit</groupId>