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CalcDemo.java
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49 lines (46 loc) · 915 Bytes
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interface Calc{
int calculator(int x, int y);
int calculator2(int x, int y);
}
// SAM
@FunctionalInterface
interface MyCalc{
int calculator(int x, int y);
//int calculator2(int x, int y);
}
class Calc1 implements Calc
{
public int calculator(int x, int y){
return x + y;
}
public int calculator2(int x, int y){
return x - y;
}
}
public class CalcDemo {
public static void main(String[] args) {
/*Calc1 obj = new Calc1();
int result = obj.calculator(10, 20);
System.out.println("Sum is "+result);*/
Calc add = new Calc(){
public int calculator(int x, int y){
return x + y;
}
public int calculator2(int x, int y){
return x - y;
}
};
/*Calc sub = new Calc(){
public int calculator(int x, int y){
return x - y;
}
};*/
// Java 8 Lambda Expression
MyCalc mul = (x,y)->{
x++;
y++;
return x*y;
};
System.out.println(mul.calculator(10, 20));
}
}