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Java code:
class p{
String p="p";
}
class c extends p{
String c="c";
}
public class Main {
public static void main(String[] args) {
Vector<c> cc=new Vector();
cc.add(new c());
Vector<p> pp=(Vector)cc;
System.out.println(&qu
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Java code:
import java.io.*;
public class RandomAcce ......
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private static final String USERNAME = "sys";
private static final String PASSWORD = "s ......
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