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import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;

public class ClipboardTest
{
public static void main(String[] args) throws Exception
{
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection selection = new StringSelection("hoge");
clipboard.setContents(selection, selection);
}
}

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