Java Articles - Page 362 of 440

Suppose you are given a String named "str". Now, your task is to write a Java program to convert the given string to Byte. String is a class in Java which stores sequence of characters within double quotes and Byte is a wrapper class of java.lang package which wraps value of byte datatype. Example Scenario: Input: String str = "65"; Output: res = 65 Using Byte.valueOf() Method The valueOf() method of Java Byte class is used to convert given string into its corresponding Byte object. It accepts a single numeric string as a parameter value and returns it as ... Read More

Let us first create a short primitive type and assign a value.short val = 30;Now, create a Short object and set the above short type to it.Short myShort = new Short(val);The following is the complete example to convert short primitive type to Short object using Short constructor.Example Live Demopublic class Demo {    public static void main(String []args) {       short val = 30;       Short myShort = new Short(val);       System.out.println(myShort);    } }Output30

Using toString() method to convert Short to string. Firstly, let us take a short primitive datatype and initialize a short value.short myShort = 55;Now let us include this value to the following Short object.Short s = new Short(myShort);Convert the above given Short to string using the toString() method as shown in the complete example below.Example Live Demopublic class Demo {    public static void main(String []args) {       short myShort = 55;       Short s = new Short(myShort);       System.out.println("Short: "+s);       String myStr = s.toString();       System.out.println("String: "+myStr);    } }OutputShort: 55 String: 55

Here is our string.String str = "Asia is a continent!";Now let us use a byte array and the getBytes() method to fulfill our purpose.byte[] byteVal = str.getBytes();Now, if we will get the length of the array, it would return the length as shown in the complete example below −Example Live Demopublic class Demo {    public static void main(String args[]) {       String str = "Asia is a continent!";       System.out.println(str);       // converted to byte array       byte[] byteVal = str.getBytes();       // getting the length       System.out.println(byteVal.length);    } }OutputAsia is a continent! 20

To convert byte[] to String, firstly let us declare and initialize a byte array.// byte array byte[] arr = new byte[] {78, 79, 33};Now take a String and include the array in it.String str = new String(arr);Let us see the complete example to convert byte array to String.Example Live Demopublic class Demo {    public static void main(String args[]) {       // byte array       byte[] arr = new byte[] {78, 79, 33};       String str = new String(arr);       // string       System.out.println("String = "+str);    } }OutputString = NO!

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.Example Live Demopublic class Demo {    public static void main(String args[]) {       String str = "p";     ... Read More

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.Example Live Demopublic 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

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.Example Live Demoimport 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

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

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