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_____ is used to find and fix bugs in the Java programs.

i) JVM

ii) JRE

iii) JDK

iv) JDB

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iv) JDB

Reason: The Java Debugger (JDB or jdb) is a command-line java debugger that debugs the java class. It is a part of the Java Platform Debugger Architecture (JPDA) that helps in the inspections and debugging of a local or remote Java Virtual Machine (JVM).

The JVM (Java Virtual Machine) enables a computer to run Java or other language (kotlin, groovy, Scala, etc.) programs that are compiled to the Java bytecode. The JRE (Java Runtime Environment) is a part of JDK that contains the Java class libraries, Java class loader, and the Java Virtual Machine. The JDK (Java Development Kit) is a software development environment used to develop Java applications and applets.

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