byte byteValue()<\/pre>\nshort shortValue()<\/pre>\nint intValue()<\/pre>\nlong longValue()\n<\/pre>\nfloat floatValue()<\/pre>\ndouble doubleValue()<\/pre>\nCode to illustrate typeValueMethod:<\/strong><\/p>\npackage com.TechVidvan.JavaNumbers;\npublic class typeValueMethodDemo\n{\n public static void main(String[] args)\n {\n\n \/\/ Creating a Double Class object with value \"45.13627\"\n Double doubleVariable = new Double(\"45.13627\");\n\n \/\/ Converting this Double(Number) object to different primitive data types\n byte byteVariable = doubleVariable.byteValue();\n short shortVariable = doubleVariable.shortValue();\n int integerVariable = doubleVariable.intValue();\n long longVariable = doubleVariable.longValue();\n float floatVariable = doubleVariable.floatValue();\n double doubleVariableObject = doubleVariable.doubleValue();\n\n \/\/Printing the converted variables\n System.out.println(\"Converting double into byte: \" + byteVariable);\n System.out.println(\"Converting double into short: \" + shortVariable);\n System.out.println(\"Converting double into int: \" + integerVariable);\n System.out.println(\"Converting double into long: \" + longVariable);\n System.out.println(\"Converting double into float: \" + floatVariable);\n System.out.println(\"Converting double into Double object: \" + doubleVariableObject);\n }\n}<\/pre>\nOutput:<\/strong><\/p>\nConverting double into byte: 45
\nConverting double into short: 45
\nConverting double into int: 45
\nConverting double into long: 45
\nConverting double into float: 45.13627
\nConverting double into Double-object: 45.13627<\/div>\n
Note:<\/strong> There may be a possible loss of precision while conversion. For example, we can note that the fraction part(\u201c.13627\u201d) has been left out while converting the Double-object into int data type.<\/em><\/p>\n2. int compareTo() method<\/h4>\n
This method compares the input argument with the Number object. It returns 1 (positive number) if the value of Number object is greater than the argument, -1 (negative number) if it is less than the value of argument and 0 if it is equal to the argument.<\/p>\n
But both the argument and the number should be of the same type, then only they can be compared. The reference type can be a byte, double, float, long, or short.<\/p>\n
Syntax of compareTo() method:<\/strong><\/p>\npublic int compareTo( NumberSubClass referenceName )\nSubClassObject.compareTo(valueToBeCompared)<\/pre>\nCode to illustrate compareTo() method:<\/strong><\/p>\npackage com.TechVidvan.JavaNumbers;\npublic class CompareToMethodDemo\n{\n public static void main(String[] args)\n {\n \/\/ creating an Double Class object with value \"12.55\"\n Double doubleObject = 12.55;\n \n \/\/initializing double variables \n double comparisonValue1 = 8.66;\ndouble comparisonValue2 = 12.55;\ndouble comparisonValue3 = 15.98;\n \n \/\/ comparing value of doubleObject\nSystem.out.println(\"Comparing 12.55 with 37.5:\");\n\n\/\/we can directly pass the value of argument\nSystem.out.println(doubleObject.compareTo(37.5));\n\n System.out.println(\"Comparing 12.55 with 6.66:\");\n System.out.println(doubleObject.compareTo(comparisonValue1));\n System.out.println(\"Comparing 12.55 with 12.55:\");\n System.out.println(doubleObject.compareTo(comparisonValue2));\n System.out.println(\"Comparing 12.55 with 15.98:\");\n System.out.println(doubleObject.compareTo(comparisonValue3));\n}\n<\/pre>\nOutput:<\/strong><\/p>\nComparing 12.55 with 37.5:
\n-1
\nComparing 12.55 with 6.66:
\n1
\nComparing 12.55 with 12.55:
\n0
\nComparing 12.55 with 15.98:
\n-1<\/div>\n
3. boolean equals(Object object) method<\/h4>\n
This method checks whether the Number object is equal to the argument (also of Number Type). Both Number object and argument may be of different types. It returns true if the values are equal, otherwise, it returns false.<\/p>\n
Syntax of equals() method:<\/strong><\/p>\npublic boolean equals(Object object)\nobject1.equals(object2);<\/pre>\nCode to illustrate equals() method:<\/strong><\/p>\npackage com.TechVidvan.JavaNumbers;\npublic class EqualsMethodDemo\n{\npublic static void main(String[] args)\n{\n \/\/ creating three Short Class objects\n Short shortObject1 = 15;\n Short shortObject2 = 4;\n Short shortObject3 = 4;\n\n \/\/ creating an Integer Class object\n Integer integerObject1 = 15;\n\n \/\/ creating an Double Class object\n Double doubleObject1= 28.65;\n System.out.println(shortObject1.equals(shortObject2));\n System.out.println(shortObject1.equals(integerObject1));\n System.out.println(shortObject2.equals(shortObject3));\n System.out.println(shortObject1.equals(doubleObject1));\n}\n}<\/pre>\nOutput:<\/strong><\/p>\nfalse
\nfalse
\ntrue
\nfalse<\/div>\n
Note:<\/strong> See even if the numeric values of Integer and Short object are the same (that is, 15), the method returns false because their types are not the same.<\/em><\/p>\n4. int parseInt() method<\/h4>\n
While working with strings, sometimes we need to convert a number represented in the form of string into an integer type. The method parseInt() is generally used to convert String to Integer in Java.<\/p>\n
We can also pass the argument radix in this method which represents decimal, octal, or hexadecimal type as output. This method returns the primitive data type of a String.<\/p>\n
Syntax of parseInt() method::<\/strong><\/p>\nstatic Integer parseInt(int i)\nstatic Integer parseInt(String s)\nstatic Integer parseInt(String s, int radix)<\/pre>\nCode to illustrate parseInt() method:<\/strong><\/p>\npackage com.TechVidvan.JavaNumbers;\npublic class ParseIntMethodDemo\n{\n public static void main(String[] args)\n {\n \/\/ parsing different strings\n int intVariable1 = Integer.parseInt(\"567\",8); \t\t\t\t\/\/string to octal conversion\n int intVariable2 = Integer.parseInt(\"567\"); \/\/String to int\n int intVariable3 = Integer.parseInt(\"-AC\", 16); \/\/string to hexadecimal\n long longVariable = Long.parseLong(\"3615345721\",10); \/\/string to decimal \n short shortVariable = Short.parseShort(\"216\",8); \/\/ String to octal conversion\n double doubleVariable = Double.parseDouble(\"216\");\/\/String to double\n\n System.out.println(intVariable1);\n System.out.println(intVariable2);\n System.out.println(intVariable3);\n System.out.println(longVariable);\n System.out.println(shortVariable);\n System.out.println(doubleVariable);\n\n \/\/ NumberFormatException will occur because \"TechVidvan\" is not a parsable string\n int intVariable4 = Integer.parseInt(\"TechVidvan\",16);\n\n \/\/ NumberFormatException will occur here(for octal(8),allowed digits are [0-7])\n int intVariable5 = Integer.parseInt(\"978\",8);\n }\n}<\/pre>\nOutput:<\/strong><\/p>\n375
\n567
\n-172
\n3615345721
\n142
\n216.0
\nException in thread “main” java.lang.NumberFormatException: For input string: “TechVidvan” under radix 2
\nat java.base\/java.lang.NumberFormatException.forInputString(NumberFormatException.java:68)
\nat java.base\/java.lang.Integer.parseInt(Integer.java:658)
\nat project1\/com.TechVidvan.JavaNumbers.ParseIntMethodDemo.main(ParseIntMethodDemo.java:23)<\/div>\n
5. String toString() method<\/h4>\n
This method is used to get the String object representation of any Number object. This method takes a primitive data type as an argument and returns a String object representing the primitive data type value.<\/p>\n
There are three variants of this method-<\/p>\n
\n- toBinaryString(int i)<\/li>\n
- toHexString(int i)<\/li>\n
- toOctalString(int i)<\/li>\n<\/ul>\n
Syntax of toString() method:<\/strong><\/p>\n\n- String toString()<\/li>\n
- String toString(int integerObject)<\/li>\n<\/ol>\n
Code to illustrate toString() method:<\/strong><\/p>\npackage com.TechVidvan.JavaNumbers;\npublic class ToStringMethodDemo\n{\n public static void main(String args[])\n {\n \/\/ creating integer object\n Integer integerObject = 25;\n System.out.println(integerObject.toString());\n System.out.println(Integer.toString(72)); \/\/integer to string conversion\n\n \/\/integer to binary string conversion\n System.out.println(Integer.toBinaryString(367));\n\n \/\/integer to hex string conversion\n System.out.println(Integer.toHexString(367));\n\n \/\/integer to an octal string conversion\n System.out.println(Integer.toOctalString(367)); }\n}<\/pre>\nOutput:<\/strong><\/p>\n25
\n72
\n101101111
\n16f
\n557<\/div>\n
6. Integer valueOf() method<\/h4>\n
The valueOf method converts the value of an argument into the relevant Number Object. The argument can be any numeric primitive data type or String.<\/p>\n
This method is a static method that can be called directly through the Integer class. The method can take two arguments, where one is a String or a primitive data type and the other is a radix.<\/p>\n
Syntax of valueOf() method::<\/strong><\/p>\nInteger valueOf(int i)\nInteger valueOf(String stringValue)\nInteger valueOf(String stringValue, int radix)<\/pre>\nCode to illustrate valueOf() method:<\/strong><\/p>\npackage com.TechVidvan.JavaNumbers;\npublic class ValueOfMethodDemo\n{\n public static void main(String args[])\n {\n \/\/ demonstrating valueOf(int integerObject) method\n Integer integerObject1 =Integer.valueOf(922);\n Double doubleObject = Double.valueOf(5.9);\n Float floatObject = Float.valueOf(80);\n System.out.println(integerObject1);\n System.out.println(doubleObject);\n System.out.println(floatObject);\n\n \/\/ demonstrating valueOf(String stringValue) method\n Integer integerObject2 = Integer.valueOf(\"444\",16);\n Integer integerObject3 = Integer.valueOf(\"-953\");\n System.out.println(integerObject2);\n System.out.println(\"\\n\" +integerObject3);\n\n \/\/ demonstrating valueOf(String stringValue,int radix) method\n Integer integerObject4 = Integer.valueOf(\"333\",8);\n Long longObject = Long.valueOf(\"51688245\",16);\n\n System.out.println(\"\\n\" +integerObject4);\n System.out.println(longObject);\n }\n}<\/pre>\nOutput:<\/strong><\/p>\n922
\n5.9
\n80.01092
\n-953219
\n1365803589<\/div>\n
Apart from these methods, there are some more methods in Java.lang.Math, that are helpful for performing various operations on numbers. We will briefly look at each of these methods through the following table.<\/p>\n
\n\n\n| Method<\/b><\/td>\n | Description<\/b><\/td>\n<\/tr>\n\n| abs()<\/span><\/td>\n | Returns the absolute value of the argument.<\/span><\/td>\n<\/tr>\n\n| ceil()<\/span><\/td>\n | Returns the smallest integer that is greater than or equal to the argument in double format.<\/span><\/td>\n<\/tr>\n\n| floor()<\/span><\/td>\n | Returns the largest integer that is less than or equal to the argument in double format.<\/span><\/td>\n<\/tr>\n\n| min()<\/span><\/td>\n | Returns the smaller of the two arguments.<\/span><\/td>\n<\/tr>\n\n| max()<\/span><\/td>\n | Returns the larger of the two arguments.<\/span><\/td>\n<\/tr>\n\n| exp()<\/span><\/td>\n | Returns e, to the power of the argument.<\/span><\/td>\n<\/tr>\n\n| log()<\/span><\/td>\n | Returns the natural logarithm of the argument.<\/span><\/td>\n<\/tr>\n\n| pow()<\/span><\/td>\n | Returns the value of the first argument raised to the power of the second argument.<\/span><\/td>\n<\/tr>\n\n| sqrt()<\/span><\/td>\n | Returns the square root of the argument.<\/span><\/td>\n<\/tr>\n\n| random()<\/span><\/td>\n | Returns a random number<\/span><\/td>\n<\/tr>\n\n| sin()<\/span><\/td>\n | Returns the sine of the specified double value.<\/span><\/td>\n<\/tr>\n\n| cos()<\/span><\/td>\n | Returns the cosine of the specified double value.<\/span><\/td>\n<\/tr>\n\n| tan()<\/span><\/td>\n | Returns the tangent of the specified double value.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nSummary<\/h3>\nHere we came to the end of our tutorial on Java Numbers. In this article, we learned about the abstract class number along with its subclasses in Java. We also discussed the different methods associated with the Number class with the help of their syntax and code.<\/p>\n I hope this article will help you to understand the complex codes related to numbers in Java.<\/p>\n Thank you for reading our article. Do share your feedback through the comment section below.<\/p>\n","protected":false},"excerpt":{"rendered":" We use numbers in our everyday life since childhood, whether it be some calculation, score or something to measure, numbers make it all possible. Numbers are something that can never leave our side, whether...<\/p>\n","protected":false},"author":1,"featured_media":76683,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[183],"tags":[1760,1761,1762,1763,1764,1765,1766,1767],"class_list":["post-76541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-autoboxing-in-java","tag-java-number-class","tag-java-number-examples","tag-java-numbers","tag-methods-in-java-numbers","tag-numbers-in-java","tag-unboxing-in-java","tag-what-is-java-number"],"yoast_head":"\n Java Number - Explore the Different Number Methods with Syntax! - TechVidvan<\/title>\n<meta name=\"description\" content=\"Explore in detail the concept of Java Number & learn the 6 different methods of number in Java explained with the help of syntax that will help you further in your Java programming.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/techvidvan.com\/tutorials\/java-number\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java Number - Explore the Different Number Methods with Syntax! 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<\/a><\/p>\n