Although Java lacks a true sizeof () equivalent, the Instrumentation interface introduced with J2SE5 can be used to get an estimate of the size of a particular object via its getObjectSize (Object ...

All classes in Java can have a single base class that they extend. When you extend another class you inherit all of the public and protected methods and fields that the class provides. The default ...

Java Object Class The Java Object class is the superclass of all classes in Java. It is the topmost class in the Java class hierarchy, and every class in Java implicitly extends the Object class if it ...

Need to disassemble a Java class file? Want to look at the bytecode instructions generated from compiling source? These javap tool examples will show you how to use the javap command properly.

A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a string is immutable -- its ...

When a class is not Serializable, this tool returns the message “Class –yourClassNameHere– is not Serializable.” An example of this is shown in the next screen snapshot.

For example, the following code creates an example of the DDATA class representing the data set sasuser.x. The data set will be opened in input mode and has two variables.

The array object in the Java programming language supports a built-in method for sorting objects. An array of strings named "words," for example, can be sorted by calling the "Arrays.sort (words ...