我們可以將數據寫入到一個鍵值對格式

Question

使用FileWriter使用的FileWriter和BufferedWrirter組合config.properties文件，我可以寫的鍵值對username = "login_data"到.properties文件，而不是.txt文件？

String value1 = "This is the value from FILE WRITER"; 
System.out.println("Key1 == " + value1); 

FileWriter fw = new FileWriter(dataFilePath, true); 
BufferedWriter bw = new BufferedWriter(fw); 

bw.write(value1); 
bw.close(); 

Answer 1

要存儲性能是最好創建一個Properties對象，把價值觀，並通過store()方法保存。

如果你想保持佈局和評論過，這是值得看的Apache下議院PropertiesConfigurationLayout：

PropertiesConfiguration config = new PropertiesConfiguration(); 
PropertiesConfigurationLayout layout = new PropertiesConfigurationLayout(); 

config.setProperty("key", "value"); 
layout.setComment("key", "description of key"); 

layout.setHeaderComment("file description"); 

layout.save(config, new FileWriter (file));