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    class Test01
    {
    public static void main(String[] args)
    {
    StringBuffer s= new StringBuffer("good");
    StringBuffer s2=s;
    s2.append(" afternoon.");
    System.out.println(s);
    }
    }
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    good afternoon.
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    class Test02
    {
    public static void main(String[] args)
    {
    int i=5;
    int i2=i;
    i2=6;
    System.out.println(i);
    }
    }
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