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Java is a cross-platform application software can write object-oriented programming language by Sun Microsystems, Inc. in May 1995 launch of the Java programming language and the Java platform (namely JavaSE, JavaEE, of JavaME) the general term.
Java language to support the development of Internet applications, a network application programming interface (java net) in the basic Java application programming interface , it provides a class library for network application programming, including the URL, URLConnection, Socket, ServerSocket.
In fact, Java's speed with the development of JIT (Just-In-Time) compiler technology, more and more close to the C + +.
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Java version
Java SE Development Kit 7u4 (latest version)
Java SE Development Kit 7u3 Java SE Development Kit 7u3
Java SE Development Kit 7u2 Java SE Development Kit 7u2
Java SE Development Kit 6u30 Java SE Development Kit 6u30
Java SE Development Kit 5.0u22 Java SE Development Kit 5.0u22
Java three system JavaSE to Java2 Platform Standard Edition (Java Platform, Standard Edition), JavaEE (Java 2 Platform, Enterprise Edition Java Platform, Enterprise Edition), the Platform Micro Edition of JavaME (Java 2, java platform, Micro Edition).
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