Java (software platform)
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While Java's floating-point arithmetic is largely based on IEEE 754 (Standard for Binary Floating-Point Arithmetic), certain features are not supported even when using the strictfp modifier, such as Exception Flags and Directed Roundings – capabilities mandated by IEEE Standard 754. Additionally, the extended-precision floating-point types permitted in 754 and present in many processors are not permitted in Java.cite-ref-107[107]cite-ref-108[108]
Performance
In the early days of Java (before the HotSpot VM was implemented in Java 1.3 in 2000) there were some criticisms of performance. Benchmarks typically reported Java as being about 50% slower than C (a language which compiles to native code).cite-ref-debchart-109-0[109]cite-ref-110[110]cite-ref-111[111]
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