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IOperate.java
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40 lines (34 loc) · 1.24 KB
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/*************************************************************************
> File Name: src/main/java/base/IOperate.java
> Author: shall
> Mail: zyydqpi@163.com
> Created Time: Tue 08 Nov 2016 03:59:14 PM CST
************************************************************************/
package base;
import java.math.BigDecimal;
public interface IOperate<T extends Number> {
default T operate(T elem1, T elem2) {
if(elem1 == null) {
return elem2;
}else if(elem2 == null) {
return elem1;
}
BigDecimal bigdec1 = new BigDecimal(elem1.toString());
BigDecimal bigdec2 = new BigDecimal(elem2.toString());
BigDecimal bigdec3 = bigdec1.multiply(bigdec2);
// System.out.println("BigDec3 : " + bigdec3);
return (T)bigdec3;
}
default T plus(T elem1, T elem2) {
if(elem1 == null) {
return elem2;
}else if(elem2 == null) {
return elem1;
}
BigDecimal bigdec1 = new BigDecimal(elem1.toString());
BigDecimal bigdec2 = new BigDecimal(elem2.toString());
BigDecimal bigdec3 = bigdec1.add(bigdec2);
// System.out.println("BigDec3 : " + bigdec3);
return (T)bigdec3;
}
}