static getter and setter java code example

Example 1: what is static setter and getter examples in java

public class DataHolder
{
   public static String dataString;
}

Example 2: what is static setter and getter examples in java

class SomeClass {
    private static Data data;

    public static void setData(String data) {
        data = new Data(data);
    }

    public static String getData() {
        return data.toString();
    }
}

class Data {
    private String data;

    public Data(String data) {
        this.data = data;
    }

    public String toString() {
        return data;
    }
}