# ADR-0008 - Use NullAway for null checking

## Date

2025-08-06

## Context

Our codebase uses `null` extensively to represent an absence of value or optionality of the argument.
We utilize nullness annotations in Java code and somewhat rely on IDE warnings to guide us.
However, the Java code we have is not fully annotated, which causes several consequences:
* IDE warnings can be misleading

4 MOVQ 32(BX), AX MULQ SI ADDQ 32(CX), AX ADCQ $0x00, DX ADDQ DI, AX ADCQ $0x00, DX MOVQ DX, DI MOVQ AX, 32(CX) // Iteration 5 MOVQ 40(BX), AX MULQ SI ADDQ 40(CX), AX ADCQ $0x00, DX ADDQ DI, AX ADCQ $0x00, DX MOVQ DX, DI MOVQ AX, 40(CX) // Iteration 6 MOVQ 48(BX), AX MULQ SI ADDQ 48(CX), AX ADCQ $0x00, DX ADDQ DI, AX ADCQ $0x00, DX MOVQ DX, DI MOVQ AX, 48(CX) // Iteration 7 MOVQ 56(BX), AX MULQ SI ADDQ 56(CX), AX ADCQ $0x00, DX ADDQ DI, AX ADCQ $0x00, DX MOVQ DX, DI MOVQ AX, 56(CX) // Iteration 8...