A simple 9-patch rectangle renderer for Java that works on any graphics API.
AWT support is bundled out of the box as AwtTextureRenderer.
Other renderers are easy to implement: they only need one method to
render a platform-specific texture type, such as BufferedImage in AWT's case.
Get it on Maven Central:
dependencies {
implementation("io.github.juuxel:libninepatch:1.2.0")
}