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public class Parent {
private String a = "a";
public String b = "b";
public void test(){
System.out.println(a);
}
}
public class Child extends Parent {
public String c = "c";
public String d = "d";
public static void main(String[] args) {
Child child = new Child();
System.out.println(child.b);
child.test();
}
}