{"slug":"java-vs-typescript","title":"Java vs TypeScript","url":"https://www.aversusb.net/compare/java-vs-typescript","faqCount":6,"faqs":[{"question":"What is Java?","answer":"Java is a general-purpose, concurrent, class-based, object-oriented language. It is strongly and statically typed. Compile time normally translates a program into a machine-independent bytecode representation. That bytecode is the instruction set and binary format in the Java Virtual Machine Specification, Java SE 27 Edition. Java includes automatic storage management, typically using a garbage collector. A class has a single superclass."},{"question":"What is TypeScript?","answer":"TypeScript is JavaScript with syntax for types. It is a strongly typed language that builds on JavaScript, and it is a typed superset of JavaScript, so JavaScript syntax is legal TypeScript. TypeScript is a static type checker. It preserves JavaScript runtime behavior and does not change it. After checking, it erases the types and emits JavaScript. It does not add a TypeScript runtime library. TypeScript 7.0 is available. The compiler is under the Apache License 2.0."},{"question":"Where does each language run?","answer":"A Java program is normally compiled to bytecode for a Java Virtual Machine. TypeScript code converts to JavaScript, which runs anywhere JavaScript runs: in a browser, on Node.js, Deno, Bun, and in apps. The two do not share a runtime."},{"question":"How do the type systems differ?","answer":"Java is strongly and statically typed. The language distinguishes compile-time errors from errors that occur at run time. TypeScript checks a program before execution based on the kinds of values. It uses type inference, and types can be added to a JavaScript project incrementally. Those types are erased. TypeScript never changes how the JavaScript runs, including when the type checker reports an error."},{"question":"Which release is current?","answer":"JDK 27 is the Reference Implementation of version 27 of the Java SE Platform, specified by JSR 402. It reached general availability on 15 September 2026. Oracle reports that Java 27 is available, and that JDK 27 delivers a post-quantum cryptography milestone. OpenJDK lists Post-Quantum Hybrid Key Exchange for TLS 1.3 among the JDK 27 features. TypeScript 7.0 is available."},{"question":"Which one should you use?","answer":"Use Java for a class-based language that compiles to Java Virtual Machine bytecode. Use TypeScript when the program should stay JavaScript, with static types that are erased before it runs in a browser, on Node.js, Deno, or Bun. There is no winner."}],"faqPageSchema":{"@context":"https://schema.org","@type":"FAQPage","@id":"https://www.aversusb.net/compare/java-vs-typescript#faq","url":"https://www.aversusb.net/compare/java-vs-typescript","inLanguage":"en-US","name":"Java vs TypeScript — FAQ","description":"Frequently asked questions about Java vs TypeScript","dateModified":"2026-10-03T00:00:00.000Z","author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"},"publisher":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"},"isPartOf":{"@type":"Article","@id":"https://www.aversusb.net/compare/java-vs-typescript#article"},"license":"https://creativecommons.org/licenses/by/4.0/","speakable":{"@type":"SpeakableSpecification","@id":"https://www.aversusb.net/compare/java-vs-typescript#faq-speakable","cssSelector":[".faq-answer"]},"mainEntity":[{"@type":"Question","@id":"https://www.aversusb.net/compare/java-vs-typescript#q1","name":"What is Java?","answerCount":1,"acceptedAnswer":{"@type":"Answer","@id":"https://www.aversusb.net/compare/java-vs-typescript#a1","text":"Java is a general-purpose, concurrent, class-based, object-oriented language. It is strongly and statically typed. Compile time normally translates a program into a machine-independent bytecode representation. That bytecode is the instruction set and binary format in the Java Virtual Machine Specification, Java SE 27 Edition. Java includes automatic storage management, typically using a garbage collector. A class has a single superclass.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/java-vs-typescript","upvoteCount":1,"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"}}},{"@type":"Question","@id":"https://www.aversusb.net/compare/java-vs-typescript#q2","name":"What is TypeScript?","answerCount":1,"acceptedAnswer":{"@type":"Answer","@id":"https://www.aversusb.net/compare/java-vs-typescript#a2","text":"TypeScript is JavaScript with syntax for types. It is a strongly typed language that builds on JavaScript, and it is a typed superset of JavaScript, so JavaScript syntax is legal TypeScript. TypeScript is a static type checker. It preserves JavaScript runtime behavior and does not change it. After checking, it erases the types and emits JavaScript. It does not add a TypeScript runtime library. TypeScript 7.0 is available. The compiler is under the Apache License 2.0.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/java-vs-typescript","upvoteCount":1,"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"}}},{"@type":"Question","@id":"https://www.aversusb.net/compare/java-vs-typescript#q3","name":"Where does each language run?","answerCount":1,"acceptedAnswer":{"@type":"Answer","@id":"https://www.aversusb.net/compare/java-vs-typescript#a3","text":"A Java program is normally compiled to bytecode for a Java Virtual Machine. TypeScript code converts to JavaScript, which runs anywhere JavaScript runs: in a browser, on Node.js, Deno, Bun, and in apps. The two do not share a runtime.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/java-vs-typescript","upvoteCount":1,"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"}}},{"@type":"Question","@id":"https://www.aversusb.net/compare/java-vs-typescript#q4","name":"How do the type systems differ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","@id":"https://www.aversusb.net/compare/java-vs-typescript#a4","text":"Java is strongly and statically typed. The language distinguishes compile-time errors from errors that occur at run time. TypeScript checks a program before execution based on the kinds of values. It uses type inference, and types can be added to a JavaScript project incrementally. Those types are erased. TypeScript never changes how the JavaScript runs, including when the type checker reports an error.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/java-vs-typescript","upvoteCount":1,"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"}}},{"@type":"Question","@id":"https://www.aversusb.net/compare/java-vs-typescript#q5","name":"Which release is current?","answerCount":1,"acceptedAnswer":{"@type":"Answer","@id":"https://www.aversusb.net/compare/java-vs-typescript#a5","text":"JDK 27 is the Reference Implementation of version 27 of the Java SE Platform, specified by JSR 402. It reached general availability on 15 September 2026. Oracle reports that Java 27 is available, and that JDK 27 delivers a post-quantum cryptography milestone. OpenJDK lists Post-Quantum Hybrid Key Exchange for TLS 1.3 among the JDK 27 features. TypeScript 7.0 is available.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/java-vs-typescript","upvoteCount":1,"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"}}},{"@type":"Question","@id":"https://www.aversusb.net/compare/java-vs-typescript#q6","name":"Which one should you use?","answerCount":1,"acceptedAnswer":{"@type":"Answer","@id":"https://www.aversusb.net/compare/java-vs-typescript#a6","text":"Use Java for a class-based language that compiles to Java Virtual Machine bytecode. Use TypeScript when the program should stay JavaScript, with static types that are erased before it runs in a browser, on Node.js, Deno, or Bun. There is no winner.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/java-vs-typescript","upvoteCount":1,"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"}}}]}}