Modernize

Modernize your code to best use the project's current JDK version. Take advantage of newly available APIs and reduce the dependency of your code on third party dependencies where there is equivalent functionality in the Java standard library.

Categories

• Cobertura
• DataNucleus
• Guava
• JaCoCo
• Jakarta
• Java EE 7
• Java EE 8
• Jspecify
• Lombok
• Maven
• Metrics
• Nio
• Search
• java.awt APIs
• java.io APIs
• java.lang APIs
• java.net APIs
• java.sql APIs
• java.util APIs
• java.util.concurrent APIs
• java.util.logging APIs
• javax APIs

Composite Recipes

Recipes that include further recipes, often including the individual recipes below.

• Add lombok-mapstruct-binding when both MapStruct and Lombok are used
• Add missing JDBC interface methods
• Add missing isWrapperFor and unwrap methods
• Adopt javax.security.auth.Subject.current() and javax.security.auth.Subject.callAs() methods
• Adopt setLongThreadID in java.util.logging.LogRecord
• Adopt switch pattern matching (JEP 441)
• Avoid using the deprecated empty finalize() method in java.desktop
• Change java.lang.reflect.Modifier and java.lang.invoke.ConstantBootstraps method calls to static
• Do not package java.xml.bind and java.activation modules in WebSphere Liberty applications
• Do not package java.xml.ws module in WebSphere Liberty applications
• Enable Lombok annotation processor
• Java best practices
• Migrate Bouncy Castle to jdk15to18 for Java < 8
• Migrate Bouncy Castle to jdk18on
• Migrate to IBM Semeru Runtimes
• Migrate to Java 11
• Migrate to Java 17
• Migrate to Java 21
• Migrate to Java 25
• Migrate to Java 6
• Migrate to Java 7
• Migrate to Java 8
• Migrate to Java EE 7
• Migrate to Java EE 8
• Remove AccessController.checkPermission(..) calls
• Remove Policy.setPolicy(..) calls
• Remove Runtime.traceInstructions(boolean) and Runtime.traceMethodCalls methods
• Remove SecurityManager permission checks
• Remove Thread.destroy() and Thread.stop(Throwable)
• Replace System.getSecurityManager() with null
• Replace finalize method in java.io.FileInputStream and java.io.FileOutputStream
• Replace finalize method in java.util.zip.ZipFile, java.util.zip.Inflater and java.util.zip.Deflater
• Set visibility of premain and agentmain methods to public
• Upgrade Java version
• Upgrade Kotlin to 2.3 for Java 25 compatibility
• Upgrade plugins to Java 11 compatible versions
• Upgrade plugins to Java 17 compatible versions
• Upgrade plugins to Java 21 compatible versions
• Upgrade plugins to Java 25 compatible versions
• Use ASN1*String for the result of DER*String.getInstance(..)
• Use com.ibm.jsse2 instead of com.sun.net.ssl.internal.ssl

Recipes

• Add JDeprScan Maven plugin
• Add Mockito Java agent to Maven Surefire plugin
• Add argLine to Maven Surefire and Failsafe plugins
• Add aspectjtools to the AspectJ Maven plugin
• Add lombok to the maven-compiler-plugin annotation processor paths
• Add lombok-mapstruct-binding dependency for Maven when both MapStruct and Lombok are used
• Add mapstruct-processor to the maven-compiler-plugin annotation processor paths
• Add maven-jar-plugin to suppress illegal reflection warnings
• Add missing method implementations
• Add static modifier to @Produces fields in session beans
• Add version and bean-discovery-mode to beans.xml files without a version
• Catch TypeNotPresentException thrown by Class.getAnnotation()
• Change beans.xml schemaLocation to match XML namespace
• Change javax.tools.ToolProvider methods calls to static
• Change method invocation return type
• Change net.wasdev.maven.parent:java8-parent to :parent
• Comment Kotlin modules capped at Java 24
• Disable the persistence unit second-level cache
• Explain why the Java version was capped at 24 for Kotlin modules
• Force indentation to either tabs or spaces
• Make MBean and MXBean interfaces public
• Migrate GraalVM resource-config.json to glob patterns
• Migrate com.intellij:annotations to org.jetbrains:annotations
• Migrate from IBM runtimes to Oracle runtimes
• Migrate to Java EE 6
• Move Bouncy Castle SPHINCS+ classes to pqc.legacy
• Prefer java.util.Base64 instead of sun.misc
• Remove Thread.countStackFrames() method
• Remove explicit casts on Arrays.asList(..).toArray()
• Remove illegal semicolons
• Rename final method declarations getSuppressed() and addSuppressed(Throwable exception) in classes that extend Throwable
• Replace AWT getPeer() method
• Replace DTO method parameters with data elements
• Replace IllegalArgumentException with AlreadyConnectedException in DatagramChannel.send() method
• Replace KeyStore.getDefaultType() with "jks"
• Replace RMIConnectorServer.CREDENTIAL_TYPES constant
• Replace SSLSession.getPeerCertificateChain() method
• Replace String literal
• Replace com.sun.awt.AWTUtilities static method invocations
• Replace com.sun.net.ssl package
• Replace deprecated methods in SecurityManager
• Replace getLocalizedInputStream and getLocalizedOutputStream with direct assignment
• Replace java.lang.ref.Reference.clone() with constructor call
• Replace javax.security.auth.Policy with java.security.Policy
• Simplify the removed security manager's thread group fallback
• Turn dangling documentation comments into block comments
• Update SDKMAN! Java version
• Upgrade CircleCI OpenJDK job images
• Upgrade Docker image Java version
• Upgrade Java version in alternate Maven builds
• Upgrade Kotlin jvmTarget to match the Java version
• Upgrade Spring Boot 3 Maven parents for Java 25
• Upgrade build to Java 11
• Upgrade build to Java 17
• Upgrade build to Java 21
• Upgrade build to Java 24 for Kotlin 1.x
• Upgrade build to Java 25 (non-Kotlin)
• Upgrade build to Java 25 for Kotlin 2.3+
• Use SunJSSE instead of com.sun.net.ssl.internal.ssl.Provider
• Use ZipException instead of ZipError
• Use com.ibm.net.ssl.www2.protocol instead of com.sun.net.ssl.internal.www.protocol
• Use com.ibm.net.ssl.www2.protocol.https.Handler instead of com.sun.net.ssl.internal.www.protocol.https.Handler
• Use com.sun.security.auth.module.Krb5LoginModule instead of com.ibm.security.auth.module.Krb5LoginModule
• Use com.sun.xml.bind.* instead of com.sun.xml.internal.bind.*
• Use java.security.cert instead of javax.security.cert
• Use javax.net.ssl instead of com.sun.net.ssl