The log functions in Java are part of java.lang.Math. The functions include log, log10, log1p. Let us see an example of each of these log functions −static double log(double a)The java.lang.Math.log(double a) returns the natural logarithm (base e) of a double value. Let us see an example −Exampleimport java.io.*; public ... Read More

The java.lang.Math class contains methods for trigonometric operations like cos(), sin(), tan(), tanh(), cosh(), atan(), etc.Let us work around some of these trigonometric functions in Java −static double asin(double a)The java.lang.Math.asin(double a) returns the arc sine of an angle, in the range of -pi/2 through pi/2.Let us now see an ... Read More

The StringTokenizer class allows an application to break a string into tokens. Following are the methods −Sr.NoMethod & Description1int countTokens()This method calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception.2boolean hasMoreElements()This method returns the same value as the hasMoreTokens method.3boolean hasMoreTokens()This method tests ... Read More

The HTML DOM Textarea autofocus property returns and modify whether the text area should automatically get focused or not when the page loads.SyntaxFollowing is the syntax −1. Returning autofocusobject.autofocus2. Modifying autofocusobject.autofocus = true | falseLet us see an example of HTML DOM Textarea autofocus Property:Example    body { ... Read More

To traverse through a HashMap, use Iterator. The HashMap class uses a hashtable to implement the Map interface. This allows the execution time of basic operations, such as get( ) and put( ), to remain constant even for large sets.Following is the code to traverse through a HashMap −Exampleimport java.util.*; ... Read More

The new operator is used in Java to create new objects. It can also be used to create an array object.Let us first see the steps when creating an object from a class −Declaration − A variable declaration with a variable name with an object type.Instantiation − The 'new' keyword ... Read More

The HTML DOM Textarea defaultValue property returns and modify the value of name attribute of a text area element in an HTML document.SyntaxFollowing is the syntax −1. Returning nameobject.name2. Adding nameobject.name = “text”Let us see an example of HTML DOM Textarea name Property:Example    body {     ... Read More

Writing a class within another is allowed in Java. The class written within is called the nested class, and the class that holds the inner class is called the outer class. Nested classes are divided into two types −Non-static nested classes (Inner Classes) − These are the non-static members of a class.Static ... Read More

The compareUnsigned() method compares two integer objects numerically considering the values as unsigned.The return value if 0 if both values are equal; -1 if the val1is less than val2. The return value is 1, if the val1 is more than val2.At first, set two Integer objects −int val1 = 50; ... Read More

The java.lang.Integer.compareTo() method compares two Integer objects numerically. This method returns the value 0 if this Integer is equal to the argument Integer, a value less than 0 if this Integer is numerically less than the argument Integer and a value greater than 0 if this Integer is numerically greater than the ... Read More