needInitializer.java

public class Init {
    public String field1;
    public String field2;

    public int field3;
    public int field4;

    public Init() {
        field1 = "str";
        field3 = 1;

        String prop1;
        prop1 = "aaa";

        String prop2;

        int prop3;
        prop3 = 1;

        int prop4;
    }
}