Java Tutorials - Herong's Tutorial Examples

∟Garbage Collection and the gc() Method

This chapter describes the garbage collection supported provided by Java. Topics include unused objects, the JVM automatic garbage collection process, the garbage collection method gc() on the default Runtime object.

Garbage Collection and Unused Objects

The Automated Garbage Collection Process

gc() - The Garbage Collection Method

Example Program of Using the gc() Method

Conclusion:

• Garbage collector is an independent thread always running in the Java Virtual Machine (JVM).
• Garbage collector automatically removes unused objects when the free space of the allocated memory is low.
• gc() method can be called to perform garbage collection explicitly.

Table of Contents

 About This Book

 JDK - Java Development Kit

 Execution Process, Entry Point, Input and Output

 Primitive Data Types and Literals

 Control Flow Statements

 Bits, Bytes, Bitwise and Shift Operations

 Managing Bit Strings in Byte Arrays

 Reference Data Types and Variables

 Enum Types and Enum Constants

 StringBuffer - The String Buffer Class

 System Properties and Runtime Object Methods

 Generic Classes and Parameterized Types

 Generic Methods and Type Inference

 Lambda Expressions and Method References

 Java Modules - Java Package Aggregation

 Execution Threads and Multi-Threading Java Programs

 ThreadGroup Class and "system" ThreadGroup Tree

 Synchronization Technique and Synchronized Code Blocks

 Deadlock Condition Example Programs

►Garbage Collection and the gc() Method

 Assert Statements and -ea" Option

 Annotation Statements and Declarations

 Java Related Terminologies

 Archived Tutorials

 References

 Full Version in PDF/EPUB

Garbage Collection and the gc() Method - Updated in 2022, by Dr. Herong Yang