https://docs.oracle.com/javase/jp/6/api/javax/swing/plaf/metal/MetalLabelUI.html
MetalLabelUI (Java Platform SE 6)
java platformse
https://docs.oracle.com/en/java/javase/25/docs/api/java.desktop/javax/swing/plaf/metal/MetalLabelUI.html
MetalLabelUI (Java SE 25 & JDK 25)
declaration: module: java.desktop, package: javax.swing.plaf.metal, class: MetalLabelUI
java sejdk