public class WriteProperty{
String str, key, val;
public static void main(String[] args) {
WriteProperty w = new WriteProperty();
}
public WriteProperty(){
try{
int check=0;
while(check == 0){
check=1;
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
System.out.println(“Enter file name which has properties extension:”);
str = bf.readLine();
Properties pro = new Properties();
File f = new File(str + “.properties”);
if(!f.exists()){
check=0;
System.out.println(“File not found!”);
}
else{
FileInputStream in = new FileInputStream(f);
pro.load(in);
System.out.print(“Enter Key : “);
key = bf.readLine();
System.out.print(“Enter Value : “);
val = bf.readLine();
pro.setProperty(key, val);
pro.store(new FileOutputStream(str + “.properties”),null);
System.out.println(“Operation completly successfuly!”);
}
}
}
catch(IOException e){
System.out.println(e.getMessage());
}
}
}