TheBigInteger.isProbablePrime(int certainty) returns true if this BigInteger is probably prime, false if it's definitely composite. If certainty is ≤ 0, true is returned.Here, the “certainty” parameter is a measure of the uncertainty that the caller is willing to tolerate: if the call returns true the probability that this BigInteger is prime exceeds (1 - 1/2certainty). The execution time of this method is proportional to the value of this parameter.The following is an example −Example Live Demoimport java.math.BigInteger; public class Demo { public static void main(String[] argv) throws Exception { // create 3 ... Read More

First, set the BigInteger object with binary.BigInteger val = new BigInteger("100000000110001100000", 2);Now, use the toByteArray() method.byte[] byteArr = val.toByteArray();The following is an example −Example Live Demoimport java.math.BigInteger; public class Demo { public static void main(String[] argv) throws Exception { BigInteger val = new BigInteger("100000000110001100000", 2); byte[] byteArr = val.toByteArray(); for (int i = 0; i < byteArr.length; i++) { System.out.format("0x%02X", byteArr[i]); } } }Output0x10 0x0C 0x60

Let us apply the following operations on BigInteger using the in-built methods in Java.Addition: add() method Subtraction: subtract() method Multiplication: multiply() method Division: divide() methodLet us create three BigInteger objects.BigInteger one = new BigInteger("98765432123456789"); BigInteger two = new BigInteger("94353687526754387"); BigInteger three = new BigInteger("96489687526737667");Apply mathematical operations on them.one = one.add(two); System.out.println("Addition Operation = " + one); one = one.multiply(two); System.out.println("Multiplication Operation = " + one);The following is an example −Example Live Demoimport java.math.BigInteger; public class Main { public static void main(String[] args) { BigInteger one = new BigInteger("98765432123456789"); ... Read More

First, create a BigInteger.BigInteger val = new BigInteger("198");Let us convert it to Binary, with radix as 2.val.toString(2);Convert it to Octal, with radix as 8.val.toString(8);Convert it to HexaDecimal, with radix as 16.val.toString(16);The following is an example −Example Live Demoimport java.math.BigInteger; public class Main { public static void main(String[] args) { BigInteger val = new BigInteger("198"); System.out.println("Value: " + val); // binary System.out.println("Converted to Binary: " + val.toString(2)); // octal ... Read More

Let us set a radix here as.// radix int r = 32;Include the radix here as a BigInteger constructor.BigInteger one = new BigInteger("vv", r);Now get its string representation −String strResult = one.toString(radix);The following is an example −Example Live Demoimport java.math.*; public class Demo { public static void main(String[] args) { // radix int r = 32; BigInteger one = new BigInteger("vv", r); String strResult = one.toString(r); System.out.println(strResult); } }Outputvv

Set a BigInteger object.BigInteger one;Now, create a ByteArray −byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 }; one = new BigInteger(byteArr);For Decimal, we have used toString() method without any parameter value.String strResult = one.toString();The following is an example −Example Live Demoimport java.math.*; public class Demo { public static void main(String[] args) { BigInteger one; // ByteArray byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 }; one = new BigInteger(byteArr); // Decimal String strResult = one.toString(); System.out.println("ByteArray to Decimal = "+strResult); } }OutputByteArray to Decimal = 65536

Set a BigInteger object.BigInteger one;Now, create a ByteArray.byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 }; one = new BigInteger(byteArr);For Octal, we have used 8 as the toString() method parameter.String strResult = one.toString(8);The following is an example −Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger one;       // ByteArray       byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 };       one = new BigInteger(byteArr);       // Octal       String strResult = one.toString(8);       System.out.println("ByteArray to Octal = "+strResult);    } }OutputByteArray to Octal = 200000

Set a BigInteger object.BigInteger one;Now, create a ByteArray.byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 }; one = new BigInteger(byteArr);For Binary, we have used 2 as the toString() method parameter.String strResult = one.toString(2);The following is an example −Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       // BigInteger object       BigInteger one;       byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 };       one = new BigInteger(byteArr);       String strResult = one.toString(2);       System.out.println("ByteArray to Binary = "+strResult);    } }OutputByteArray to Binary = 10000000000000000

Firstly, take two BigInteger objects and set values.BigInteger one, two; one = new BigInteger("99");Now, parse BigInteger object “two” into Octal.two = new BigInteger("1100", 8); String str = two.toString(8);Above, we have used the following constructor. Here, radix is set as 8 for Octal. for both BigInteger constructor and toString() method.BigInteger(String val, int radix)This constructor is used to translate the String representation of a BigInteger in the specified radix into a BigInteger.The following is an example −Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger one, two;       one = new ... Read More

Firstly, take two BigInteger objects and set values.BigInteger one, two; one = new BigInteger("99"); two = new BigInteger("978");Now, parse BigInteger object “two” into Binary.two = new BigInteger("1111010010", 2); String str = two.toString(2);Above, we have used the following constructor. Here, radix is set as 2 for Binary for both BigInteger constructor and toString() method.BigInteger(String val, int radix)This constructor is used to translate the String representation of a BigInteger in the specified radix into a BigInteger.The following is an example −Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger one, two;     ... Read More