https://docs.oracle.com/javase/jp/21/docs/api/java.desktop/javax/swing/text/DocumentFilter.html
DocumentFilter (Java SE 21 & JDK 21)
declaration: module: java.desktop, package: javax.swing.text, class: DocumentFilter
java sejdk
https://docs.oracle.com/javase/jp/8/docs/api/javax/swing/text/DocumentFilter.FilterBypass.html
DocumentFilter.FilterBypass (Java Platform SE 8)
java platformse