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Title: Single-file execution | java.evolved

Open Graph Title: Single-file execution | java.evolved

X Title: Single-file execution | java.evolved

Description: Run single-file Java programs directly without javac.

Open Graph Description: Run single-file Java programs directly without javac.

X Description: Run single-file Java programs directly without javac.

Opengraph URL: https://javaevolved.github.io/tooling/single-file-execution.html

direct link

Domain: javaevolved.github.io


Hey, it has json ld scripts:
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Links:

java.evolvedhttps://javaevolved.github.io/
https://github.com/javaevolved/javaevolved.github.io
← All patternshttps://javaevolved.github.io/
https://javaevolved.github.io/tooling/jshell-prototyping.html
https://javaevolved.github.io/tooling/multi-file-source.html
Homehttps://javaevolved.github.io/
Toolinghttps://javaevolved.github.io/#tooling
🐛 Report a code issuehttps://github.com/javaevolved/javaevolved.github.io/issues/new?template=code-issue.yml&title=%5BCode%20Issue%5D%20Single-file%20execution&category=tooling&slug=single-file-execution
🌐 Report a translation issuehttps://github.com/javaevolved/javaevolved.github.io/issues/new?template=translation-issue.yml&title=%5BTranslation%5D%20Single-file%20execution%20%28English%29&locale=en&pattern=single-file-execution&area=Pattern%20content
💡 Suggest a new patternhttps://github.com/javaevolved/javaevolved.github.io/issues/new?template=new-pattern.yml
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Let us know.https://github.com/javaevolved/javaevolved.github.io/issues/new?template=code-issue.yml&title=%5BCode%20Issue%5D%20Single-file%20execution&category=tooling&slug=single-file-execution
Launch Single-File Source-Code Programs (JEP 330) ↗https://openjdk.org/jeps/330
Tooling Intermediate Multi-file source launcher Java 8 $ javac *.java $ java Main // Must compile all files first // Need a build tool for dependencies Java 22+ $ java Main.java // Automatically finds and compiles // other source files referenced // by Main.java Hover to see modern ➜ JDK 22+ → https://javaevolved.github.io/tooling/multi-file-source.html
Tooling Advanced Compact object headers Java 8 // Default: 128-bit object header // = 16 bytes overhead per object // A boolean field object = 32 bytes! // Mark word (64) + Klass pointer (64) Java 25 // -XX:+UseCompactObjectHeaders // 64-bit object header // = 8 bytes overhead per object // 50% less header memory // More objects fit in cache Hover to see modern ➜ JDK 25+ → https://javaevolved.github.io/tooling/compact-object-headers.html
Tooling Intermediate JFR for profiling Java 8 // Install VisualVM / YourKit / JProfiler // Attach to running process // Configure sampling // Export and analyze // External tool required Java 9+ // Start with profiling enabled $ java -XX:StartFlightRecording= filename=rec.jfr MyApp // Or attach to running app: $ jcmd JFR.start Hover to see modern ➜ JDK 9+ → https://javaevolved.github.io/tooling/jfr-profiling.html
java.evolvedhttps://javaevolved.github.io/
Bruno Borgeshttps://github.com/brunoborges
GitHub Copilothttps://github.com/features/copilot
modern-css.comhttps://modern-css.com
View on GitHubhttps://github.com/javaevolved/javaevolved.github.io

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