读取jtable中的文件 [英] Read a file in a jtable

问题描述

我有这样的代码:

private void jTable4MouseClicked(java.awt.event.MouseEvent evt) {                                     
    if (evt.getClickCount() == 1) {
        System.out.println("clicked");
        int row = jTable4.getSelectedRow();
        if (row != -1) {
            String firstColumnValue = jTable4.getModel().getValueAt(row, 0).toString();
            String secondColumnValue = jTable4.getModel().getValueAt(row, 1).toString();
            jTextAreaMainFileHighlight.setText(firstColumnValue); // just show name of a file
            jTextAreaComparingFileHighlighter.setText(secondColumnValue); // just show name of a file

        }

您知道，jtabel包含文件名.如何将该文件读取到然后显示在jTextArea中

You know, the jtabel is contains a name of file. How to read that file to and then show in jTextArea

推荐答案

这是读取Java文件的基础.无论如何读取文件(在jtable中给出的名称)并显示文件的内容，您都可以使用以下命令

This is a basic of java file reading .Anyway to read the a file (name given in jtable) and to display the content of the file you can use following

    BufferedReader br = null;

            try {

                String str;

                br = new BufferedReader(new FileReader(firstColumnValue));

                while ((str = br.readLine()) != null) {
                    System.out.println(str);
                   jTextAreaMainFileHighlight.setText(str);
                }

            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if (br != null)br.close();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }

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