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package swa.prakt3;
public class ArithmeticSubstraction extends ArithmeticOperation {
public ArithmeticSubstraction(ArithmeticExpression operand1,
ArithmeticExpression operand2) {
super(operand1, operand2);
operationSign = "-";
}
@Override
public Number doOperation(Number op1, Number op2) {
return op1.doubleValue() - op2.doubleValue() ;
}
}
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