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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
class ParseDemo {
public static void main(String args[]) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String str;
int i;
int sum = 0;
System.out.println("Enter numbers, 0 to quit.");
do {
str = br.readLine();
try {
i = Integer.parseInt(str);
} catch (NumberFormatException e) {
System.out.println("Invalid format");
i = 0;
}
sum += i;
System.out.println("Current sum is: " + sum);
} while (i != 0);
}
}
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