Features
| Sun JVM HotSwap | JavaRebel | |
| Changing method bodies | |
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| Adding/removing methods | |
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| Adding/removing constructors | |
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| Adding/removing fields | |
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| Adding/removing classes | |
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| Adding/removing annotations | |
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| Changing interfaces | |
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| Replacing superclass | |
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| Adding/removing implemented interfaces | |
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Supported JVMs
- Sun Java 1.4.x
- Sun Java 5.x
- Sun Java 6.x
- JRockit JVM 8.1sp6 or later
- JRockit JVM 9.x 1.5.0_06 or later
- IBM J9 1.4.x
- IBM J9 5.x
- IBM J9 6.x
- Apple MRJ 5.x
- Apple MRJ 1.4.x
- Apple MRJ 5.x
Supported Containers:
- BEA Weblogic 8.x, 9.x, 10.x
- GlassFish v2
- Oracle OC4J 9.x, 10.x
- Tomcat 4.x, 5.x, 6.x
- JBoss 3.x, 4.x (on Java 5 or later)
- Jetty 5.x, 6.x (on Java 5 or later)
- Equinox OSGi (including Eclipse plugins)
- IntelliJ IDEA plugins


