This tutorial book based on notes and sample codes collected by the author while he was learning Java tools himself. Topics includes: ''java/javaw'' Launcher, ''javac'' Compiler, ''javadoc'' Document Generator, ''javap'' Class File Disassembler, ''jar/jarsigner'' Archive Tool, ''jconsole'' Console, ''jdb'' Debugger, ''jdeps'' Dependency Analyzer, ''jdeprscan'' Deprecated API Scanner, ''jhat'' Heap Analysis Tool, ''jlink'' JRE Linker, ''jhsdb'' HotSpot Debugger, ''jmap'' Memory Dumper, ''jmc'' Mission Control, ''jpackage'' Binary Package Builder, ''jrunscript'' Script Shell, ''jstack'' Stack Dumper, ''jstat'' Statistics, ''jstatd'' Statistics Daemon, ''jvisualvm'' Visual VM, ''jwebserver'' Web Server, ''keytool'' Keystore Tool, ''serialver'' serialVersionUID generator. Updated in 2024 (Version v6.24) with minor updates.