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LumaQQ是一个基于Java SWT的QQ客户端，通过阅读其代码，学到了很多Java Network Programming，试图帮助其完善某个组件，终究因为自身学业问题（挂科要补考）未能有机会帮上忙。
LumaQQ is a JAVA SWT based QQ client. Via reading souce code, I learned a lot of Java Network Programming and architecture, design pattern, as well as shell scripting.
How to set JAVA_HOME environment variable automatically on Linux
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13 Jul 2005 Hartmann 0-4-2T B2220 (1900) 3ft 6in gauge plinthed at Ambarawa.
Ambarawa Railway Museum, Semerang Regency, Central Java.
13 Jul 2005 Hartmann 2-6-0T C.1140 (1891) 3ft 6in gauge plinthed at Ambarawa.
Ambarawa Railway Museum, Semerang Regency, Central Java.
Name: Java sparrow
Scientific: Lonchura oryzivora
Malay: Ciak Jawa
Family: Estrildidae
IUCN Red List (v3.1, 2018): Endangered
Gear: SONY a1 + SEL600F40GM
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For any enquiries, please visit my website: www.nurismailphotography.com or email at nismailm@gmail.com.
APRIL 25th, LONDON – Simon Maple, Robert Rees and The London Java Community meet for a session taking a tour of the Java class loading mechanism, both from JVM and developer point of view. Looking at typical problems that you get with class loading and how to solve them. See the SkillsCast (Video, code, slides) at: skillsmatter.com/podcast/java-jee/do-you-really-get-class...
Enum in Java is the short form of Enumeration. The Java Enum class defines a list of constants whose values we cannot change. It is similar to the final variable. We always define the Enum constants in the upper case. In this article, we will see how to enumerate in Java.
Syntax of declaring an Enum (Enumeration)
To declare an enum we must use the enum keyword followed by the variable. Inside the curly braces, we declare the constants separated by a comma.
enum Speed {
SLOW, MEDIUM, FAST
}
Speed - represents the Enum variable name
The values inside the curly braces represent the Enum constants.
Features of Enum (Enumeration)
- We must always define the enum constants using upper case
- We can declare an enum either inside or outside the class
- Enum is a class and every constant is an object of an enum type.
- We can declare fields and methods inside an enum
- Each enum constant is separated by a comma and should end with a semicolon if an enum contains methods as well.
Accessing Enum constants in Java
We can access enum constants in 2 different ways:
- Creating an enum variable: We can create an enum variable by assigning the enum constant to it. We can use this variable to print the value.
enum Speed {
SLOW, MEDIUM, FAST
}
Speed s = Speed.MEDIUM;
System.out.println(d);
- Using enum name: We can directly access the constant using the enum name.
enum Speed {
SLOW, MEDIUM, FAST
}
System.out.println(Speed.SLOW);
Using
We drove across the island of Java from Semarang to Borobudur, and back. We were on a 50-seater coach, and had a police escort all the way, forcing through the heavy traffic. A glimpse at what it must be like to be a VIP!