Nov 20, 2011 · My hypothesis is that C# execution time is faster than Java execution time on Windows, because C# is developed by Microsoft. Some of you might already know the answer to this hypothesis, and there have probably been studies that document this.

Key Differences Between C# and Java. Platform Dependency: C# was once Windows-focused but is now cross-platform with .NET Core. Java has always been platform-independent, running on any OS with a JVM. Runtime Environment: C# uses the .NET CLR, supporting multiple languages within the .NET ecosystem. Java runs on the JVM, enabling WORA ...

C# and Java differ in their compilation and execution processes, which can affect performance. C# compiles to an intermediate language (IL), which is then transformed into machine code during runtime through the JIT compilation process.

Jun 26, 2009 · Java is closer [to C++ in performance] than C# thanks to the excellent work in HotSpot-like VMs which employ code pitching and stack allocation.

Feb 22, 2025 · Microsoft-created C# is a popular language for creating Windows apps, online services, and video games. Java, developed by Sun Microsystems (now owned by Oracle), is famed for its...

Mar 17, 2025 · Below are some major differences between C# and Java: platform-independent APIs. C# supports operator overloading for multiple operators. Java does not support operator overloading. C# supports CLR(Common Language Runtime). Java supports JVM(Java Virtual Machine). C# APIs are controlled by an open-source community.

Jun 5, 2024 · Compare C# and Java for application development. Explore their performance, popularity, and future prospects to choose the right language for your next project. C# and Java are two of the most popular programming languages used by developers today.

Sep 2, 2024 · But in recent benchmarks, Java actually matches and even surpasses C# program execution speed in certain tests. For example, a Java hand-coded prime number program beat a C# .NET Core application by 3x times in speed tests done in 2020.

Apr 17, 2025 · Execution Speed: Java's Just-In-Time (JIT) compilation optimizes performance at runtime, while C# benefits from the Common Language Runtime (CLR) for similar optimizations. However, the performance can vary based on the specific use case and environment.

Discussing the key differences of C# vs Java, we see that C# is tightly integrated with Microsoft technologies, while Java offers broader platform independence. They’ve been the backbone of industries for decades, but deciding which suits your business vision isn’t always straightforward. This blog isn’t about picking sides.