CODE EXAMPLE 2-1

Missing Classes

Missing Class Descriptions (Modified classes and nested classes)

Missing Superclasses or Superinterfaces

Missing Fields

Missing Constructors

Missing Methods

Added Classes

Added Class Descriptions (Modified classes and nested classes)

Added Superclasses or Superinterfaces

Added Fields

Added Constructors

Added Methods

Linkage Errors

Linkage errors occur during testing if the API implementation under test is corrupted, for example, if a superclass or superinterface of a class under test cannot be loaded.

See the sorted report in CODE EXAMPLE A-4.

Unsorted Report

The -FormatPlainoption specifies an unsorted report. The unsorted format reports messages immediately during execution and duplicate messages are included.

shows an unsorted report that corresponds to the sorted report in CODE EXAMPLE A-4.

CODE EXAMPLE 2-1Unsorted Report Example

Definition required but not found in example.test method public int get(int)

Definition found but not permitted in example.test method public java.lang.String get(int)

Definition found but not permitted in example.test method public void put()

SignatureTest report Tested version: 2.0 STATUS: Failed. 3 errors

Chapter 2 Using the Signature Test Tool

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Sun Microsystems manual Code Example 2-1Unsorted Report Example

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.

One of the primary features of Sun Microsystems' platforms was their ability to efficiently handle multitasking and resource management, making them ideal for enterprise-level applications and development environments. Sun-4 workstations boasted impressive graphics capabilities with the addition of advanced graphical user interfaces, support for color displays, and the SUNVIEW windowing system, which enhanced user experience and productivity.

The Sun-4 systems also supported the SunOS operating system, which was based on UNIX. This operating system was engineered for stability and robustness, offering features like multiuser support, networked environments, and advanced security options. Moreover, SunOS provided seamless integration with various programming languages, including C and C++, facilitating software development that aligned with industry standards.

Another standout characteristic of Sun Microsystems was its commitment to open systems and standards. By providing developers with comprehensive tools and environments, such as the Standardized Application Programming Interface (API) and support for networking protocols, Sun facilitated interoperability among different computing platforms. The emphasis on open architecture also meant that customers could easily upgrade their systems without being locked into proprietary solutions.

Sun Microsystems was also ahead of its time with innovations in network computing. Their workstations were among the first to support network file systems and distributed computing concepts, enabling seamless data sharing across multiple systems. With the introduction of the Network File System (NFS), Sun revolutionized how data was accessed and managed across networks, which played a significant role in the evolving landscape of client-server computing.

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.