How do I convert the following String to a Person object ?
String testString = "John|23;Ron|22;Don|32"
public class Person{
private String name;
private String age;
//getters and setters for name and age
}
Is there any utility class to convert the testString to Person objects based on the delimiters ";" and "|"
Not easily; that's not really a standard format. My advice would be to write a static fromString method on Person, and then call Person.fromString() on each item returned by testString.split(";").
No, you have to write your own parser, because no one could know why to associate the first value to "name" and the second one to "age" - although Reflection could help, but that would be a big overhead for such a task.
For parsing, you could first split at ";" and then for every split array element, split at "|", iterate this array and fill the Person according to the array iteration.
It is not in standard format like json, so you would need to write your own parser. For example, here is the Person class that does what you want:
public class Person {
private final String name;
private final int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public static Collection<Person> parse(String input) {
Collection<Person> persons = new HashSet<Person>();
for (String s : input.split(";")) {
String[] properties = s.split("\\|");
persons.add(new Person(properties[0], Integer.parseInt(properties[1])));
}
return persons;
}
public static void main(String[] args) {
String testString = "John|23;Ron|22;Don|32";
System.out.println(parse(testString));
}
}
If it was in json you could use a json parser.
This might be done in that way.
public class Person{
private String name;
private String age;
public Person(){}:
public static List<Person> gerPersons(String personString){
List<Person> result = new ArrayList<Person>();
String[] presonsTab = personString.split(";");
for(String p : personsTab){
Person person = new Person();
String personTab = p.split("|");
if(personTab.length!=2)
throw new RuntimeException("Provide proper String");
person.setName(personTab[0]);
person.setAge(personTab[1]);
result.add(person);
}
return result;
}
public void setName(String n){ this.name = n;}
public void setAge(String a){this.age = a;}
}
