自动生成实体类

javabean中需要建大量的实体类，几张表就有几张实体类，有时候感觉很繁琐。
闲余时间写了个类来自动生成实体类。希望后期能自动获得数据库字段和数据类型。
代码：

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Scanner;

public class EntityFactory {
	/**
	 * 实体类生成工具 输入/输出 路径 将\改成\\ outClass{Classname(int @@@,....)}//Classname为类名
	 * int 为数据类型 @@@变量名 遵守方法命令规范
	 */
	private String outpath;// 生成的类所在的目录

	private String sentence;// 设置语句 遵守格式 outClass{Classname(int @@@,....)}

	public EntityFactory(String outpath, String sentence) {
		super();
		this.outpath = outpath;
		this.sentence = sentence;
	}

	public EntityFactory() {
	}

	public String getSentence() {
		return sentence;
	}

	public void setSentence(String sentence) {
		this.sentence = sentence;
	}

	public String getOUTPATH() {
		return outpath;
	}

	public void setOUTPATH(String oUTPATH) {
		outpath = oUTPATH;
	}

	public File makeFile(String name, String type) {
		/**
		 * 生成的文件 名字和后缀名
		 */
		String path = outpath + name + "." + type;
		File outf = new File(path);
		if (outf.exists()) {
			outf.delete();
		} else {
			try {
				outf.createNewFile();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		return outf;
	}

	public String getClassName(String str) {
		/**
		 * 获得类名
		 */
		String className = null;
		if (str.contains("outClass")) {
			int start = str.indexOf("{");
			int sp = str.indexOf("(");
			className = str.substring(start + 1, sp);
		}
		return className;
	}

	public ArrayList<String[]> splitString(String str) {
		/**
		 * 取出关键字 类型 变量名 int @@@ 
		 */
		ArrayList<String[]> list = new ArrayList<String[]>();
		if (str.contains("outClass")) {
			int sp = str.indexOf("(");
			int end = str.lastIndexOf(")");
			String content = str.substring(sp + 1, end);
			String[] info = content.split(",");

			for (String s : info) {
				String[] detail = s.split(" ");
				list.add(detail);
			}

		}
		return list;
	}

	public String initial(String str) {
		/**
		 * 首字母大写
		 */
		String s = str.substring(0, 1);
		return s.toUpperCase() + str.substring(1);
	}

	public void writeFile() {
		/**
		 * bw.write("**实体类自动生成"); 写入文件
		 */
		BufferedWriter bw = null;
		try {
			File file = makeFile(getClassName(sentence), "java");
			bw = new BufferedWriter(new FileWriter(file));
			ArrayList<String[]> list = splitString(sentence);
			bw.write("public  class  " + getClassName(sentence) + "{");
			bw.newLine();
			bw.write("/*****");
			bw.newLine();
			bw.newLine();
			bw.write("**@time"
					+ new SimpleDateFormat("yyyy-MM-dd").format(new Date()));
			bw.newLine();
			bw.write("****/");
			bw.newLine();
			for (int i = 0; i < list.size(); i++) {
				/**
				 * 属性private
				 */
				String[] detail = list.get(i);
				bw.write("private\t" + detail[0] + "\t" + detail[1] + " ;");
				bw.newLine();
				bw.newLine();
			}

			bw.newLine();
			/** 无参数构造方法 **/
			bw.write("public\t" + getClassName(sentence) + "() {}");

			bw.newLine();
			bw.newLine();

			/**
			 * // 有参数构造方法
			 */
			bw.write("public\t" + getClassName(sentence) + "(");
			bw.newLine();
			for (int i = 0; i < list.size(); i++) {
				String[] detail = list.get(i);
				if (i != list.size() - 1) {
					bw.write(detail[0] + " " + detail[1] + ",");
				} else {
					bw.write(detail[0] + " " + detail[1]);
				}
			}
			bw.write(")");
			bw.write("{");
			for (int i = 0; i < list.size(); i++) {
				String[] detail = list.get(i);
				bw.write("this." + detail[1] + "=" + detail[1] + ";");
				bw.newLine();
			}
			bw.write("\t}");

			bw.newLine();
			/**
			 * // get set方法
			 */
			for (int i = 0; i < list.size(); i++) {
				String[] detail = list.get(i);
				bw.newLine();
				bw.write("\tpublic\t" + detail[0] + "\t" + "get"
						+ initial(detail[1]) + " () {");
				bw.newLine();
				bw.write("\t" + "return" + "\t" + detail[1] + ";");
				bw.newLine();
				bw.write("\t}");
				bw.newLine();
				bw.write("\tpublic\t" + "void\t" + "set" + initial(detail[1])
						+ "(" + detail[0] + "  " + detail[1] + ") {");
				bw.newLine();
				bw.write("\t" + "this." + detail[1] + "=" + detail[1] + ";");
				bw.newLine();
				bw.write("\t}");
				bw.newLine();
			}
			bw.newLine();
			bw.newLine();

			/**
			 * // toString 方法
			 */
			bw.write("public\tString\ttoString () {");
			bw.newLine();
			bw.write("\t" + "return" + "\t" + "\"" + getClassName(sentence)
					+ "[");
			for (int i = 0; i < list.size(); i++) {
				String[] detail = list.get(i);
				if (i == list.size() - 1) {
					bw.write(detail[1] + "=" + "\"" + "+" + detail[1] + "+"
							+ "\"" + "]" + "\"" + ";");
				} else {
					bw.write(detail[1] + "=" + "\"" + "+" + detail[1] + "+"
							+ "\"" + ",");
				}
			}
			bw.newLine();
			bw.write("\t}");
			bw.newLine();
			bw.newLine();
			bw.write("}");

			bw.flush();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			try {
				bw.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

	public boolean checkClass() {
		boolean boo = true;
		if (getClassName(sentence) == null) {
			System.out.println("缺少outClass关键字");
			boo = false;
		}
		return boo;

	}

	public void produceClass() {

		Scanner input = new Scanner(System.in);
		System.out.println("请输入目标文件夹（格式D:\\\\）");
		String pa = input.nextLine();
		// ef.setOUTPATH("D:\\");
		setOUTPATH(pa);
		System.out
				.println("请outClass命令 outClass{Classname(int @@@,....)}//Classname为类名* int 为数据类型 @@@变量名");
		String classkey = input.nextLine();
		// ef.setSentence("outClass{Test(int num1,int num2,String b,String name,String password)}");
		setSentence(classkey);
		boolean boo = checkClass();
		if (boo) {
			writeFile();
			System.out.println("已经生成" + getClassName(sentence) + ".java"
					+ "\t路径" + outpath);
		} else {
			System.out.println("生成失败！！");
		}
	}

	public static void main(String[] args) {
		EntityFactory ef = new EntityFactory();
		ef.produceClass();
	}
}