Java Swing-19 Swing實例17JTree

[ 聲明] 學習筆記和代碼均參考自徐彤老師（ITFlight）的視頻 樹控件java 要放到帶滾動條的容器上node package demo16; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTree; import javax.swing.tree.DefaultMutableT

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