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The following is an example displaying the maximum of three integer values.Example Live Demopublic class Demo { public static void main(String[] args) { int val1 = 10; int val2 = 20; int val3 = 30; System.out.println("Number 1 = "+val1); System.out.println("Number 2 = "+val2); System.out.println("Number 3 = "+val3); if (val2 > val1) { val1 = val2; } if (val3 > val1) { val1 = val3; ... Read More
The following is an example displaying the minimum of three integer values.Example Live Demopublic class Demo { public static void main(String[] args) { int val1 = 99; int val2 = 87; int val3 = 130; System.out.println("Number 1 = "+val1); System.out.println("Number 2 = "+val2); System.out.println("Number 3 = "+val3); if (val2 < val1) { val1 = val2; } if (val3 < val1) { val1 = val3; ... Read More
Primitive datatypes are predefined by the language and named by a keyword in Java. Here is an example to display the default value of primitive data types.Example Live Demopublic class Demo { static boolean val1; static double val2; static float val3; static int val4; static long val5; static String val6; public static void main(String[] args) { System.out.println("Default values....."); System.out.println("Val1 = " + val1); System.out.println("Val2 = " + val2); System.out.println("Val3 = " + val3); System.out.println("Val4 = " + val4); ... Read More
Every data type in Java has a minimum as well as maximum range, for example, for Float.Min = 1.4E-45 Max = 3.4028235E38Let’s say for Float, if the value extends the maximum range displayed above, it leads to Overflow.However, if the value is less than the minimum range displayed above, it leads to Underflow.The following is the Java Program to display the minimum and maximum value of primitive data types.Example Live Demopublic class Demo { public static void main(String[] args) { System.out.println("Integer Datatype values..."); System.out.println("Min = " + Integer.MIN_VALUE); System.out.println("Max = " ... Read More
In order to check if a String has only unicode letters in Java, we use the isDigit() and charAt() methods with decision making statements.The isLetter(int codePoint) method determines whether the specific character (Unicode codePoint) is a letter. It returns a boolean value, either true or false.Declaration − The java.lang.Character.isLetter() method is declared as follows −public static boolean isLetter(int codePoint)where the parameter codePoint represents the character to be checked.The charAt() method returns a character value at a given index. It belongs to the String class in Java. The index must be between 0 to length()-1.Declaration − The java.lang.String.charAt() method is declared ... Read More
Overflow occurs when the given value is more than the maximum prescribed size of a data type. The overflow condition can result to an error or now the implementation of the programming language handles it on its own.To display overflow of datatypes, I have taken an example of float datatype. Float data type is a single-precision 32-bit IEEE 754 floating point.The range of a float datatype is −approximately ±3.40282347E+38FThe following program display overflow of datatypes in Java.Example Live Demopublic class Demo { public static void main(String[] args) { System.out.println("Displaying Overflow... "); float val1 = ... Read More
To display Boolean type, firstly take two variables and declare them as boolean.boolean val1, val2;Then one by one assign values to both of them, one of them is shown below −val1 = true;Now, use if statement to check and display the Boolean true value.if(val1) System.out.println("This is true and will get displayed!");Let us now see the complete example to work with Boolean Type in Java.Example Live Demopublic class Demo { public static void main(String[] args) { boolean val1, val2; System.out.println("Boolean Type in Java"); val1 = true; if(val1) ... Read More
The valueOf() method returns the relevant Number Object holding the value of the argument passed. The argument can be a primitive data type, String, Boolean, etc. Therefore, to parse a string to a Boolean object, use the Java valueOf() method.The following is an example showing how to parse a string to a Boolean object in Java.Example Live Demopublic class Demo { public static void main(String[] args) { System.out.println("Parsing a string to a Boolean object..."); Boolean val = Boolean.valueOf("true"); System.out.println("Value: "+val); } }OutputParsing a string to a Boolean object... Value: trueBoolean ... Read More
To get the floor value of a number, we use the java.lang.Math.floor() method. The Math.floor() method returns the largest (closest to positive infinity) double value which is less than or equal to the parameter and has a value which is equal to a mathematical integer on the number line. If the parameter is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.Declaration - The java.lang.Math.floor() method is declared as follows −public static double floor(double a)Let us see a program to get the floor value of a number in Java.Example Live Demoimport ... Read More
To get the string representation of Boolean, use the toString() method.Firstly, we have used the valueOf() method for Boolean object and set a string value.Boolean val = Boolean.valueOf("false");The same is then represented using “toString() method.val.toString();Let us see the complete example that prints the string representation of Boolean (True and False) in Java.Example Live Demopublic class Demo { public static void main(String[] args) { // false Boolean val = Boolean.valueOf("false"); System.out.println("Displaying the string representation of Boolean"); System.out.println(val.toString()); // true val = Boolean.valueOf("true"); ... Read More