小编sam*_*sam的帖子

我正在尝试在记事本中开发一个查找和替换.到目前为止,这是我的代码.我想知道按下按钮后如何保持对话框打开,以便我可以使用对话框进行下一次查找.

import java.awt.BorderLayout;
import java.awt.event.*;
import java.io.FileInputStream;
import java.io.FileReader;
import java.util.Scanner;

import javax.swing.*;

class TextAreaEx extends JFrame implements ActionListener, KeyListener {

    JButton button1;
    JTextArea tx = new JTextArea();
    int startFrom = 0;
    int offset = 0;
    String find = "";
    String text = "";

    TextAreaEx() {
        super("My Frame");
        FileInputStream fis = null;
        StringBuffer sb = new StringBuffer();
        try {
            Scanner scan = new Scanner(new FileReader("C:\\Users\\Sam\\Desktop\\networktools.txt"));
            while (scan.hasNext()) // while there's still something to read
            {
                tx.append(scan.nextLine() + "\n"); // append …