import java.util.*;
import java.lang.*;
class Main
{
{
// array1 having three null elements
String[] array1
= new String[]{ "hello",
"world",
"from",
"array1",
null,
null,
null }; // array2 having no null elements
String[] array2
= new String[]{ "hi",
"this",
"is",
"array2" };
// print array1
{
}
// swap values
array1 = array2;
// print array1 again
{
}
}
}
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