假設在伺服器端我們已經得到一個java對象,現在考慮如何將這個java對象轉換為一個符合json文法的字串。當然我們可以自己寫一套演算法實現這個轉換,但是比較麻煩,尤其當對象的屬性很多的時候或者屬性嵌套的比較深的時候,就更麻煩了。實際中,我們可以利用現成的工具實現這個轉換過程:User.java :public class User {private String name;private int age;public String getName() {return name;}public
作者: 轉載 編程:編寫一個截取字串的函數,輸入為一個字串和位元組數,輸出為按位元組截取的字串。 但是要保證漢字不被截半個,如“我ABC”4,應該截為“我AB”,輸入“我ABC漢DEF”,6,應該輸出為“我ABC”而不是“我ABC+漢的半個”。 package string; class SplitString { private String str; private int byteNum; public SplitString(){} public SplitString(String
public class Timer extends ObjectA facility for threads to schedule tasks for future execution in a background thread. Tasks may be scheduled for one-time execution, or for repeated execution at regular intervals.方法:schedule(TimerTask task,
· MoreThanOneLogger: Normally only one logger is used in each class. 翻譯 多於一個日誌記錄器:一般而言一個日誌記錄器只用於一個類中。· LoggerIsNotStaticFinal: In most cases, the Logger can be declared static and final. 翻譯 日誌記錄器不是static final的:大多數情況下,日誌記錄器應該被定義為static和final的·
import java.util.Scanner;public class HanoiTest { public HanoiTest(){ } public static void move(String from,String to){ System.out.println("move the top plate from "+from+" to "+to); } public static void execute(int n,String from,String
Java code for authenticating into SMTP server with Auth and TLS turned on..After a long search I came across this sample Java code for sendingemail into an SMTP server which required authentication and secure (TLS) connection. Hence I thought, I
Io 異常: The Network Adapter could not establish the connection這個異常的出現一般與資料庫和你的PC的設定有關這種異常的出現大致上有下面幾種:1。IP錯誤。在設定URL時錯誤,例如:jdbc:oracle:thin:@192.168.0.36:1521:sharp資料庫伺服器不正確:ping