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This is a summary of an article about Java. The article discusses the employment opportunities and development scenarios in Java. It also mentions the application areas of Java, such as enterprise-level applications, Android platform applications, and mobile domain applications. The article provides an example program and explains what a program is. It also tells the story of Java's origin and mentions its important features, such as being an object-oriented and robust language with cross-platform compatibility. The article discusses the development tools for Java and introduces the Java Development Kit (JDK) and Java Runtime Environment (JRE). It explains the relationship between JDK, JRE, and Java Virtual Machine (JVM). The article concludes with information on how to download and install JDK.