first we have our properties file say for example data.properties
name = Rajkumar Singh
course = java
now create a singleton class as fallows
DataSingleton.java
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package example; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.util.Properties; public class DataSingleton { static private DataSingleton instance = null; public String name; public String course; static public DataSingleton getDataSingleton(){ if(instance == null){ instance = new DataSingleton(); } return instance; } private DataSingleton(){ try{ BufferedReader br = new BufferedReader(new FileReader(new File("data.txt"))); Properties prop = new Properties(); prop.load(br); name = prop.getProperty("name"); course = prop.getProperty("course"); }catch(IOException e){ e.printStackTrace(); } } }
now we have our tester class like this
TesterClass.java
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public class TesterClass { public static void main(String[] args) { DataSingleton ds = DataSingleton.getDataSingleton(); System.out.println(ds.name); System.out.println(ds.course); } }
output:
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Rajumar Singh
java
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the example is self explementory.......hope u enjoy the code segment
looking forward to your reply
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