C H A P T E R 1

Introduction

The SigTest tool makes it possible to easily compare the signatures of two different implementations of the same API. It verifies that all of the members are present, reports when new members are added, and checks the specified behavior of each API member.

Signature Test Basics

A signature test compares two implementations of an API and reports the differences. SigTest tool compares the signatures of two implementations of the same API and and can do the following:

Create and run a test that verifies that all of the members are present

Report when new members are added

Check the specified behavior of each API member

The signature test created by SigTest tool can be run independently at the command line, or under the control of the JavaTest™ harness.

Note – For simplicity, this user’s guide refers to the test harness as the JavaTest harness. Note that the open source version of the harness, called JT harness, can be used in its place. The JT harness software can be downloaded from:

http://jtharness.dev.java.net/

The SigTest tool was originally created to assist in the creation of Java technology compatibility test suites (TCKs). It simplified the process of verifying that the API signature of a new implementation of a Java technology matched the signature of a reference implementation of that API.

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Sun Microsystems 2 manual Introduction, Signature Test Basics

2 specifications

Sun Microsystems, founded in 1982, was a significant player in the computing industry, best known for its innovative technology solutions and workstations, particularly the Sun-4, which represented a key milestone in the company's history. The Sun-4 architecture, launched in 1987, utilized the SPARC (Scalable Processor Architecture) RISC processor, notable for its high performance and scalability.

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In summary, the Sun Microsystems 2 and its successive innovations in workstation technology highlighted the company's forward-thinking approach. By integrating powerful performance with open systems, robust operating systems, and advanced networking capabilities, Sun laid the groundwork for modern computing, influencing various sectors from academia to enterprise solutions. Even after its acquisition by Oracle in 2010, the legacy of Sun Microsystems continues to be felt across the computing industry.