Why is Swing rendering broken in JDK 1.8, and how can I fix it?

Swing Rendering Problems Resolved with JDK 1.8 and Environmental Variable Adjustment

Some users have encountered rendering issues with Swing user interfaces in JDK 1.8 while they appeared correctly in JDK 1.7. The problem manifests as distorted fonts and disappearing button text on mouse hover.

In response, a solution has emerged that involves setting the "J2D_D3D" global environment variable to "false." This variable controls Java 2D's use of Direct3D, and disabling it can resolve the rendering problems.

To create this variable, navigate to your operating system's environmental variables settings and create a new variable with the name "J2D_D3D" and the value "false". After setting this variable, the Swing rendering problems should be resolved.

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