JOL

JOL is an acronym that can refer to several different concepts depending on the context. In computing, JOL stands for Java Object Layout, a library and toolkit used to inspect and analyze the in-memory layout of Java objects. It allows developers and researchers to examine object headers, alignment, padding, and field offsets, helping to understand memory usage and the effects of different JVM configurations, such as compressed oops. The project is used for educational and debugging purposes within the Java ecosystem.

In labor market statistics, the related terminology is Job Openings and Labor Turnover Survey, commonly abbreviated as JOLTS. JOLTS is produced by the U.S. Bureau of Labor Statistics and measures job openings, hires, layoffs, and separations to assess labor demand and turnover. While some informal sources may shorten the concept to JOL, the official designation for the survey is JOLTS, not JOL, and that distinction is important for precise reporting.

In other contexts, JOL can refer to various organizations, publications, or product names that adopt the same acronym. Because JOL is polysemous, its specific meaning should be inferred from context. See also JOLTS for the labor statistics context, and Java Object Layout for the memory-analysis library.