java常用的代码有
1、字符串整型互相转换
String a = String.valueOf(2); //integer to numeric string int i = Integer.parseInt(a); //numeric string to an int
2、字符串转日期
String methodName = Thread.currentThread().getStackTrace()[1].getMethodName();
3、得到当前方法的名字
String methodName = Thread.currentThread().getStackTrace()[1].getMethodName();
4、把 Java util.Date 转成 sql.Date
java.util.Date utilDate = new java.util.Date(); java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());
5、向文件末尾添加内容
BufferedWriter out = null; try { out = new BufferedWriter(new FileWriter(”filename”, true)); out.write(”aString”); } catch (IOException e) { // error processing code } finally { if (out != null) { out.close(); } }