Println Debugging Done Right

IntelliJ IDEA 2026.2 significantly upgrades logpoints, the IDE's enhanced alternative to println debugging. Key improvements include direct bytecode instrumentation for conditional and logging breakpoints (delivering ~30x performance improvement over the traditional JPDA/JDWP model), AI agent compatibility with a new bundled skill that lets coding agents set, manage, and clean up logpoints autonomously, and a revamped UI with single-click logpoint creation and console-to-source navigation. The instrumentation approach eliminates the suspend-evaluate-resume cycle that previously made logpoints unusable in hot paths or timing-sensitive code, and works automatically without any configuration changes or debug session restarts.