Skills Required

The Sun Certified Associate for the Java Platform, Standard Edition, Exam Version 1.0 certification exam is meant for people who aspire to make a career in the software development industry using Java technologies. To pass this certification exam one must be well versed in: Object-Oriented......
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Things to Practice for CX310-019

The Sun Certified Associate for the Java Platform, Standard Edition, Exam Version 1.0 certification exam is meant for people who aspire to make a career in the software development industry using Java technologies. Before taking this exam, you must practice the following: Understand......
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Java 2 Platform Micro Edition (J2ME)

J2ME stands for Java 2 Micro Edition. This platform of Java is used to develop applications for resource constraint devices such as mobile phones, PDAs, set top boxes, etc. The J2ME comprises three major components. These components are as follows: Configuration Profile Optional......
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String Handling

The String class is defined in the java.lang package and hence is implicitly available to all the programs in Java. The String class is declared as final, which means that it cannot be subclassed. It extends the Object class and implements the Serializable, Comparable, and CharSequence......
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Java-Data types, Variables, and Arrays

Java is a robust language. One of the factors, which makes Java robust is the fact that it is a strongly typed language, i.e., every variable has a type, every expression has a type, and every type is defined. Java defines eight primitive data types. These are as follows: int byte long......
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JDBC

The introduction of the Java language is required before introducing the concept of JDBC. Java is an object-oriented programming language. It incorporates all the objected-oriented concepts such as polymorphism, abstraction, encapsulation, etc. Java is a platform independent language because it......
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How are packages declared?

Packages are declared by using the package statement. The word package is a keyword in Java. The package statement is not technically needed to write a complete Java program. However, if it appears, it must be the first executable statement in the program. Only comments or white spaces are......
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What are boolean logical operators ?

Boolean logical operators operate on boolean operands. They combine two boolean values and return a boolean value as a result. The table below shows some boolean operators and the result they respectively produce. In the above table, A and B are boolean variables....
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What are character literals?

Character literals are 16 bit Unicode characters that are used to represent a single character. They are generally used to initialize variables declared as char. They can also be converted into integer types and manipulated with integer operators. Character literals are formed by enclosing a......
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What are final variables?

Variables declared with the keyword final as a modifier are called final variables. They are so called because once initialized a value, their values cannot be modified. Any attempt made to modify the value of a pre-initialized final variable will result in a compile time error. A final......
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