https://docs.oracle.com/javase/jp/18/docs/api/java.desktop/javax/swing/plaf/metal/MetalBorders.RolloverButtonBorder.html
MetalBorders.RolloverButtonBorder (Java SE 18 & JDK 18)
declaration: module: java.desktop, package: javax.swing.plaf.metal, class: MetalBorders, class: RolloverButtonBorder
java sejdk
https://www.enseignement.polytechnique.fr/informatique/Java/11/api/java.desktop/javax/swing/plaf/metal/MetalBorders.MenuBarBorder.html
MetalBorders.MenuBarBorder (Java SE 11 & JDK 11 )
java sejdk