[DFS] fix(dependency): Java Language Level JDK 1.5 (EOL since October 2009)

[zerowsw]

⚠️ High-risk change — manual review recommended (severity: high)

Finding

• Title: Java Language Level JDK 1.5 (EOL since October 2009)
• Severity: high | Category: dependency
• Description: The project's IntelliJ module configuration (mp3.iml) sets the language level to JDK_1_5 (Java 5), which reached End of Life in October 2009. Java 5 lacks 15+ years of security patches, performance improvements, and language features (lambdas, records, pattern matching, modern concurrency). The pom.xml has no explicit maven-compiler-plugin source/target configuration, meaning compilation depends on the build machine's JDK.
• Finding ID: 01KYTKFTZ3VTDECJJ4PQAG71HR

Transform Applied

• Transform: AWS/java-version-upgrade

Validation

• Diff: 12 files changed, +61 / −23

Changed Files

• pom.xml
• target/classes/grep/ArgsToServer.class
• target/classes/grep/GrepClient.class
• target/classes/grep/GrepClientThread.class
• target/classes/grep/GrepServer.class
• target/classes/grep/GrepServerThread.class
• target/classes/grep/ServerProperties.class
• target/maven-archiver/pom.properties
• target/maven-status/maven-compiler-plugin/compile/default-cli/createdFiles.lst
• target/maven-status/maven-compiler-plugin/compile/default-cli/inputFiles.lst
• ... and 2 more

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_{Automated by ATX Continuous Modernization. Review carefully before merging.}