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Cell – The Smallest Unit of Data

A Cell represents a single value inside a row.

In Selenium automation:

  • Cells provide input values
  • Cells store runtime-generated output
  • Cells often contain mixed data types

Why Cells Matter​

Most Apache POI issues occur at the cell level due to:

  • unexpected cell types
  • empty cells
  • formatting differences

Key Concepts to Understand​

  • Cell indexing starts from zero
  • Cells may not exist even if column appears empty
  • Excel formatting does not guarantee stored type

Automation Design Rule​

Never directly assume a cell contains a String.

Cell values must be handled defensively to ensure stability.