Write a program to explain do while loop in java, JAVA Programming

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Write a program to explain do while loop in Java ?

// This is the Hello program in Java

class Hello {

public static void main (String args[]) {

int i = -1;
do {
if (i == -1) System.out.print("Hello ");
else {
System.out.print(args[i]);
System.out.print(" ");
}
i = i + 1;
} while (i < args.length);
System.out.println(); // Finish the line
}

}

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