Math.pow()

Math.pow(input_number1,input_number2)

System.out.println(Math.pow(2,2));   //4.0
System.out.println(Math.pow(2,4));   //16.0
System.out.println(Math.pow(-2,-5)); //-0.03125
System.out.println(Math.pow(-2,3));  //-8.0

System.out.println(Math.pow(2.12,2));     //4.494400000000001
System.out.println(Math.pow(2.12,4.34));  //26.079402457445806
System.out.println(Math.pow(-2.12,-5.67));//NaN
System.out.println(Math.pow(-2.12,3));    //-9.528128