Gui and event handling- File Editor Design 1. The purpose of the requirements a) requires an understanding of the Java version of the clip Principle 2) text editor features should be revoked once more 2. The contents of the experiment with the experiment learned data input and output streams, Java built-in functions to achieve the basic operation of the program design document. The editor asked to complete a basic text manipulation. For example, open, save, copy, paste, font, color, picture insertion, printing and other functions. Modify the contents of the completion of the Undo function

SimpleEditor
............\.metadata
............\.........\.lock
............\.........\.log
............\.........\.me_tcat
............\.........\........\temp
............\.........\.plugins
............\.........\........\com.genuitec.eclipse.easie.tomcat.myeclipse
............\.........\........\com.genuitec.eclipse.sqlexplorer
............\.........\........\................................\ConnectionProfiles.xml
............\.........\........\................................\SQLDrivers.xml
............\.........\........\com.genuitec.org.hibernate.eclipse
............\.........\........\..................................\hibernate-tools.log
............\.........\........\org.eclipse.birt.chart.engine
............\.........\........\org.eclipse.birt.report.viewer
............\.........\........\org.eclipse.core.resources
............\.........\........\..........................\.history
............\.........\........\..........................\.root
............\.........\........\..........................\.....\.indexes
............\.........\........\..........................\.....\........\history.version
............\.........\........\..........................\.....\........\properties.index
............\.........\........\..........................\.....\........\properties.version
............\.........\........\..........................\.....\4.tree
............\.........\........\..........................\.safetable
............\.........\........\..........................\..........\org.eclipse.core.resources
............\.........\........\org.eclipse.core.runtime
............\.........\........\........................\.settings
............\.........\........\........................\.........\com.genuitec.eclipse.derby.prefs
............\.........\........\........................\.........\com.genuitec.eclipse.examples.prefs
............\.........\........\........................\.........\com.genuitec.eclipse.wizards.prefs
............\.........\........\........................\.........\com.genuitec.pulse.client.targetcfg.collab.ui.prefs
............\.........\........\........................\.........\org.eclipse.core.resources.prefs
............\.........\........\........................\.........\org.eclipse.debug.ui.prefs
............\.........\........\........................\.........\org.eclipse.jdt.core.prefs
............\.........\........\........................\.........\org.eclipse.jdt.launching.prefs
............\.........\........\........................\.........\org.eclipse.jdt.ui.prefs
............\.........\........\........................\.........\org.eclipse.team.cvs.core.prefs
............\.........\........\........................\.........\org.eclipse.team.cvs.ui.prefs
............\.........\........\........................\.........\org.eclipse.team.ui.prefs
............\.........\........\........................\.........\org.eclipse.ui.editors.prefs
............\.........\........\........................\.........\org.eclipse.ui.ide.prefs
............\.........\........\........................\.........\org.eclipse.ui.workbench.prefs
............\.........\........\........................\.........\org.maven.ide.eclipse.prefs
............\.........\........\org.eclipse.debug.core
............\.........\........\org.eclipse.debug.ui
............\.........\........\org.eclipse.dltk.core
............\.........\........\.....................\Containers.dat
............\.........\........\org.eclipse.jdt.core
............\.........\........\....................\externalLibsTimeStamps
............\.........\........\....................\javaLikeNames.txt
............\.........\........\....................\nonChainingJarsCache
............\.........\........\....................\variablesAndContainers.dat
............\.........\........\org.eclipse.jdt.launching
............\.........\........\.........................\libraryInfos.xml
............\.........\........\org.eclipse.jdt.ui
............\.........\........\..................\dialog_setting

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