BigInteger compareTo() Method in Java
Last Updated :
12 May, 2022
The java.math.BigInteger.compareTo(BigInteger value) method Compares this BigInteger with the BigInteger passed as the parameter.
Syntax:
public int compareTo(BigInteger val)
Parameter: This method accepts a single mandatory parameter val which is the BigInteger to compare with BigInteger object.
Return Type: This method returns the following:
- 0: if the value of this BigInteger is equal to that of the BigInteger object passed as a parameter.
- 1: if the value of this BigInteger is greater than that of the BigInteger object passed as a parameter.
- -1: if the value of this BigInteger is less than that of the BigInteger object passed as a parameter.
Examples:
Input: BigInteger1=2345, BigInteger2=7456
Output: -1
Explanation: BigInteger1.compareTo(BigInteger2)=-1.
Input: BigInteger1=9834, BigInteger2=7456
Output: 1
Explanation: BigInteger1.compareTo(BigInteger2)=1.
Example 1: Below programs illustrate the compareTo() method of BigInteger class when both BigIntegers are equal
Java
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
BigInteger b1, b2;
b1 = new BigInteger("321456");
b2 = new BigInteger("321456");
int comparevalue = b1.compareTo(b2);
if (comparevalue == 0) {
System.out.println("BigInteger1 "
+ b1 + " and BigInteger2 "
+ b2 + " are equal");
}
}
}
|
Output:
BigInteger1 321456 and BigInteger2 321456 are equal
Example 2: when BigInteger1 is greater than BigInteger2
Java
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
BigInteger b1, b2;
b1 = new BigInteger("654321");
b2 = new BigInteger("321456");
int comparevalue = b1.compareTo(b2);
if (comparevalue == 1) {
System.out.println("BigInteger1 " + b1 + "
is greater than BigInteger2 " + b2);
}
}
}
|
Output:
BigInteger1 654321 is greater than BigInteger2 321456
Example 3: When BigInteger1 is lesser than BigInteger2
Java
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
BigInteger b1, b2;
b1 = new BigInteger("321456");
b2 = new BigInteger("564321");
int comparevalue = b1.compareTo(b2);
if(comparevalue == -1) {
System.out.println("BigInteger1 " + b1 + "
is lesser than BigInteger2 " + b2);
}
}
}
|
Output:
BigInteger1 321456 is lesser than BigInteger2 564321
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