How can I get a long number bigger than Long.MAX_VALUE?
I want this method to return true
:
boolean isBiggerThanMaxLong(long val) {
return (val > Long.MAX_VALUE);
}
This question is related to
java
long-integer
If triangle.lborderA
is indeed a long then the test in the original code is trivially true, and there is no way to test it. It is also useless.
However, if triangle.lborderA
is a double, the comparison is useful and can be tested. isBiggerThanMaxLong(1e300)
does return true.
public static boolean isBiggerThanMaxLong(double in){
return in > Long.MAX_VALUE;
}
You can't. If you have a method called isBiggerThanMaxLong(long)
it should always return false
.
If you were to increment the bits of Long.MAX_VALUE
, the next value should be Long.MIN_VALUE
. Read up on twos-complement and that should tell you why.
Firstly, the below method doesn't compile as it is missing the return type and it should be Long.MAX_VALUE
in place of Long.Max_value
.
public static boolean isBiggerThanMaxLong(long value) {
return value > Long.Max_value;
}
The above method can never return true
as you are comparing a long
value with Long.MAX_VALUE
, see the method signature you can pass only long
there.Any long
can be as big as the Long.MAX_VALUE
, it can't be bigger than that.
You can try something like this with BigInteger class :
public static boolean isBiggerThanMaxLong(BigInteger l){
return l.compareTo(BigInteger.valueOf(Long.MAX_VALUE))==1?true:false;
}
The below code will return true
:
BigInteger big3 = BigInteger.valueOf(Long.MAX_VALUE).
add(BigInteger.valueOf(Long.MAX_VALUE));
System.out.println(isBiggerThanMaxLong(big3)); // prints true
Source: Stackoverflow.com