business.java

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package common;

import java.io.*;
import java.util.*;

public class Business {
    int hour;
    public Business() {
    }

    /**
     * 此方法实现重命名文件
     * @param oldname String
     * @param newname String
     * @return boolean
     */
    public boolean renameTo(String oldname, String newname) {
        try {
            File oldfile = new File(oldname);
            if (!oldfile.exists()) {
                return (false);
            } else {
                oldfile.renameTo(new File(newname));
            }
            return (true);
        } catch (Exception ex) {
            ex.printStackTrace();
            return (false);
        }
    }

    /**
     * 此方法产生一个唯一文件名
     * @param oldname String
     * @return String
     */
    public String getNewName(String oldname) {
        try {

            String newName = null;
            String exName = null;
            String now = null;
            int index = oldname.lastIndexOf(".");

            if (index != -1) {
                exName = oldname.substring(index, oldname.length());
                Calendar cNow = Calendar.getInstance();
                if (cNow.get(Calendar.AM_PM) == cNow.get(Calendar.AM)) {
                    hour = cNow.get(Calendar.HOUR) + 12;
                }
                now = "" + cNow.get(Calendar.YEAR) +
                      (cNow.get(Calendar.MONTH) + 1) +
                      cNow.get(Calendar.DATE) + hour + cNow.get(Calendar.MINUTE) +
                      cNow.get(Calendar.SECOND) + cNow.get(Calendar.MILLISECOND);
                newName = now + exName;
                newName = this.getPath(oldname) + "\\" + newName;
                return (newName);
            } else {
                return (oldname);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            return (null);
        }
    }

    /**
     * 此方法返回文件的路径
     * @param filename String
     * @return String
     */
    public String getPath(String filename) {
        try {
            String filepath = null;
            int index = filename.lastIndexOf("\\");
            filepath = filename.substring(0, index);
            return (filepath);
        } catch (Exception ex) {
            ex.printStackTrace();
            return (filename);
        }
    }

    /**
     * 此方法实现得到指定路径的文件名
     * @param file String
     * @return String
     */
    public String getName(String file) {
        try {
            String path = null;
            int index = file.lastIndexOf("\\");
            if (index != -1) {
                path = file.substring(index + 1, file.length());
                return (path);
            } else {
                return (file);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            return (file);
        }
    }
}