【JAVA】高频单词统计器（附教程）

以你之姓@ 2022-10-22 04:19 178阅读 0赞

# [视频教程][Link 1]. #

package EngLishPackage;
    
    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
    import java.io.*;
    import java.util.*;
    
    public class Note implements ActionListener { 
    	private MyFrame _myFrame;
    	private JLabel _label;
    	private JButton _openBtn;
    	private JButton _saveBtn;
    	private JTextArea _textArea;
    	public static HashMap<String, Integer> map = new HashMap<String, Integer>();
    	public static String ss[];
    	public static int value[];
    	public static int p;
    
    	public static void in(String s) { 
    		String t = "";
    		s = ";" + s + ";";
    		int p = 0;
    		for (int i = 1; i < s.length(); i++) { 
    			if (isab(s.charAt(i)) && (!isab(s.charAt(i - 1)))) { 
    				p = i;
    			}
    			if (isab(s.charAt(i)) && (!isab(s.charAt(i + 1)))) { 
    				t = s.substring(p, i + 1);
    				map.put(t, map.containsKey(t) ? map.get(t) + 1 : 1);
    			}
    		}
    	}
    
    	public static boolean isab(char c) { 
    		return c >= 'a' && c <= 'z';
    	}
    
    	public Note() { 
    		_myFrame = new MyFrame("高频英文单词统计器——王跃坤QQ群323348662");
    		_myFrame.setSize(960, 560);
    		_myFrame.setLayout(new BorderLayout());
    		// 初始化组件
    		this.initComponents();
    		_myFrame.setVisible(true);
    	}
    
    	public static String tot(String s) { 
    		for (int i = s.length(); i < 20; i++) { 
    			s += " ";
    		}
    		return s;
    	}
    
    	private void initComponents() { 
    		JPanel labelP = new JPanel();
    		_label = new JLabel("当前没有打开任何文件");
    		_label.setFont(new Font("楷体", Font.BOLD, 40));
    		labelP.add(_label);
    		_myFrame.add(labelP, BorderLayout.NORTH);
    
    		JPanel contentP = new JPanel();
    		_textArea = new JTextArea();
    		_textArea.setLineWrap(true);
    		_textArea.setFont(new Font("楷体", Font.BOLD, 20));
    		_myFrame.add(new JScrollPane(_textArea), BorderLayout.CENTER);
    
    		JPanel btnP = new JPanel(new GridLayout(1, 2));
    		_openBtn = new JButton("打开源文本文件");
    		_saveBtn = new JButton("输出高频词文件");
    		_openBtn.addActionListener(this);
    		_saveBtn.addActionListener(this);
    		_openBtn.setFont(new Font("楷体", Font.BOLD, 30));
    		_saveBtn.setFont(new Font("楷体", Font.BOLD, 30));
    		btnP.add(_openBtn);
    		btnP.add(_saveBtn);
    		_myFrame.add(btnP, BorderLayout.SOUTH);
    		_textArea.setCaretColor(Color.yellow);
    		_textArea.setDisabledTextColor(Color.RED);
    		_textArea.setSelectedTextColor(Color.blue);
    		_textArea.setSelectionColor(Color.green);
    
    		_textArea.append("请选择打开源文本文件" + "\n");
    	}
    
    	/** ActionListener接口方法 */
    	public void actionPerformed(ActionEvent e) { 
    		File file = null;
    		JFileChooser fileChooser = new JFileChooser();// 打开根目录(默认是用户)
    		if (e.getSource() == _openBtn) {  // 点击了打开按钮
    			fileChooser.setDialogTitle("打开文件");
    			fileChooser.setApproveButtonText("确定");
    			int result = fileChooser.showOpenDialog(_myFrame);
    			if (result == JFileChooser.APPROVE_OPTION) {  // 点击了确定按钮
    				file = fileChooser.getSelectedFile();
    				_label.setText("打开的文件为:" + file.getName());
    			} else if (result == JFileChooser.CANCEL_OPTION) {  // 点击了取消按钮
    				_label.setText("没有选择任何文件");
    			} else { 
    				_label.setText("操作出现错误");
    			}
    
    			if (file != null) { 
    				try { 
    					Scanner scanner = new Scanner(new FileInputStream(file));
    					_textArea.append("\n" + "正在引入文件请稍候..." + "\n" + "\n");
    					while (scanner.hasNext()) { 
    						String string = scanner.next();
    						string = string.toLowerCase();
    						in(string);
    					}
    					ss = new String[map.size()];
    					value = new int[map.size()];
    					p = 0;
    					for (String s : map.keySet()) { 
    						ss[p] = s;
    						value[p] = map.get(s);
    						p++;
    					}
    					int t;
    					String tt;
    					for (int i = 0; i < p; i++) { 
    						for (int j = 0; j < p - i - 1; j++) { 
    							if (value[j] < value[j + 1]) { // 乱序
    								// if((value[j]<value[j+1])||((value[j]==value[j+1])&&ss[j].compareTo(ss[j+1])>0)){有序
    								t = value[j];
    								value[j] = value[j + 1];
    								value[j + 1] = t;
    								tt = ss[j];
    								ss[j] = ss[j + 1];
    								ss[j + 1] = tt;
    							}
    						}
    					}
    					scanner.close();
    					_textArea.append("文件读入完成" + "\n" + "\n" + "请输出高频词文件" + "\n" + "\n");
    				} catch (Exception ex) { 
    					_label.setText("文件读取出错");
    				}
    			}
    		} else {  // 点击了保存按钮
    
    			fileChooser.setDialogTitle("保存文件");
    			fileChooser.setApproveButtonText("确定");
    			int result = fileChooser.showSaveDialog(_myFrame);
    			if (result == JFileChooser.APPROVE_OPTION) {  // 点击了确定按钮
    				file = fileChooser.getSelectedFile();
    				_label.setText("选择存储的文件为:" + file.getName());
    			} else if (result == JFileChooser.CANCEL_OPTION) {  // 点击了取消按钮
    				_label.setText("没有选择任何文件");
    			} else { 
    				_label.setText("操作出现错误");
    			}
    
    			if (file != null) { 
    				try { 
    					PrintStream writename = new PrintStream(new FileOutputStream(file));
    					int index = 1;
    					for (int i = 0; i < p; i++) { 
    						if (ss[i].length() > 1) { 
    							writename.print(index + " : " + tot(ss[i]) + "\t" + value[i] + "\n");
    							index += 1;
    						}
    					}
    					writename.flush();
    					_textArea.append("高频词文件输出完成！" + "\n" + "\n" + "-------------------" + "\n");
    					_textArea.append("请选择文件或关闭程序" + "\n" + "-------------------" + "\n");
    					map.clear();
    					p = 0;
    				} catch (Exception ex) { 
    					_label.setText("保存文件失败");
    				}
    			}
    		}
    	}
    
    	public static void main(String[] args) { 
    		new Note();
    	}
    }
    
    class MyFrame extends JFrame { 
    	public MyFrame() { 
    		super();
    	}
    
    	public MyFrame(String title) { 
    		super(title);
    		this.addWindowListener(new WindowAdapter() { 
    			public void windowClosing(WindowEvent e) { 
    				System.exit(1);
    			}
    		});
    	}
    
    	/** 重写setSize方法 */
    	public void setSize(int width, int height) { 
    		super.setSize(width, height);
    
    		int screenW = (int) this.getToolkit().getScreenSize().getWidth();
    		int screenH = (int) this.getToolkit().getScreenSize().getHeight();
    		this.setLocation((screenW - width) / 2, (screenH - height) / 2);
    	}
    }

[Link 1]: https://www.bilibili.com/video/BV1op4y1Y79x