https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/border/EmptyBorder.html
EmptyBorder (Java SE 21 & JDK 21)
declaration: module: java.desktop, package: javax.swing.border, class: EmptyBorder
java sejdk
https://doc.yonyoucloud.com/doc/jdk6-api-zh/javax/swing/border/EmptyBorder.html
EmptyBorder (Java 2 Platform SE 6)
javaplatformse