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Object Oriented Programming Articles
Page 263 of 589
Display the minimum and maximum value of primitive data types in Java
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.Examplepublic 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 MoreOverflow of DataTypes in Java
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.Examplepublic class Demo { public static void main(String[] args) { System.out.println("Displaying Overflow... "); float val1 = 3.3976835E38f; ...
Read MoreBoolean Type in Java
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.Examplepublic class Demo { public static void main(String[] args) { boolean val1, val2; System.out.println("Boolean Type in Java"); val1 = true; if(val1) ...
Read MoreJava Program to convert an int to a boolean specifying the conversion values
To convert int to boolean, let us first take the following int.int one = 1; int two = 1; int three = 0;We have nested if-else statement to display the true or false values. Here, the value “one” is the same as “two” i.e. 1; therefore, the following works −else if (one.equals(two)) { System.out.println(true); }The above display “true” and in this way we converted int to boolean.Let us now see the complete example to learn how to convert int to Boolean.Examplepublic class Demo { public static void main(String[] args) { int one = 1; ...
Read MoreJava Program to check for Integer overflow
To check for Integer overflow, we need to check the Integer.MAX_VALUE, which is the maximum value of an integer in Java.Let us see an example wherein integers are added and if the sum is more than the Integer.MAX_VALUE, then an exception is thrown.Examplepublic class Demo { public static void main(String[] args) { int val1 = 9898989; int val2 = 6789054; System.out.println("Value1: "+val1); System.out.println("Value2: "+val2); long sum = (long)val1 + (long)val2; if (sum > Integer.MAX_VALUE) { throw new ...
Read MoreDisplay the maximum of three integer values in Java
The following is an example displaying the maximum of three integer values.Examplepublic 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 MoreDisplay the minimum of three integer values in Java
The following is an example displaying the minimum of three integer values.Examplepublic 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 MoreJava Program to convert an UNSIGNED byte to a JAVA type
Firstly, let us declare byte values.byte val1 = 127; byte val2 = -128;To convert the above given unsigned byte, you can use the following. Here, we are first implementing it for the variable “val1”.(int) val1 & 0xFFNow for the second variable “val2”.(int) val2 & 0xFFLet us see the complete example to convert an UNSIGNED bye to a JAVA type.Exampleimport java.util.*; public class Demo { public static void main(String[] args) { byte val1 = 127; byte val2 = -128; System.out.println(val1); System.out.println((int) val1 & 0xFF); System.out.println(val2); System.out.println((int) val2 & 0xFF); } }Output127 127 -128 128
Read MoreConvert a byte to hexadecimal equivalent in Java
To convert a byte to hexadecimal equivalent, use the toHexString() method in Java.Firstly, let us take a byte value.byte val1 = (byte)90;Before using the method, let us do some more manipulations. Mask the byte value now:int res = val1 & 0xFF;Let us now see the complete example and use the toHexString() method to convert a byte to hexadecimal equivalent.Examplepublic class Demo { public static void main(String[] args) { byte val1 = (byte)90; System.out.println("Byte = "+val1); int res = val1 & 0xFF; System.out.println("Hexadecimal = "+Integer.toHexString(res)); } }OutputByte = 90 Hexadecimal = 5a
Read MoreConvert Hex String to byte Array in Java
To convert hex string to byte array, you need to first get the length of the given string and include it while creating a new byte array.byte[] val = new byte[str.length() / 2];Now, take a for loop until the length of the byte array.for (int i = 0; i < val.length; i++) { int index = i * 2; int j = Integer.parseInt(str.substring(index, index + 2), 16); val[i] = (byte) j; }Let us see the complete example.Examplepublic class Demo { public static void main(String args[]) { String str = "p"; ...
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