Fields of java.lang.Byte Class: Currently, the Java 2D(tm) API image classes use TYPE_BYTE, TYPE_USHORT, TYPE_INT, TYPE_SHORT, TYPE_FLOAT, and TYPE_DOUBLE DataBuffers to store image data. And then shift the bits to return a byte array. Questions: How do I convert a java.io.File to a byte? But something is still not right. This means that the Java byte is the same size as a byte in computer memory: it's 8 bits, and can hold values ranging from -128 to 127 . One byte, this might be the answer comes out of your mind right away. Introduction to Primitive Data Types in Java. The first bit of code converts the positive int 255 to the signed byte (byte)−1. In Java, the int data type is considered as default data type for integers.Therefore, if you write 100, Java will create a four- byte memory area for storage. The read() method of ByteArrayInputStream class in Java is used to read the next byte of the ByteArrayInputStream. Generally, an object of class DataBuffer will be cast down to one of its data type specific subclasses to access data type specific methods for improved performance. In this chapter you will learn: How to convert an integer value to byte, double, float, int, long and short; How to decode a string and return an integer value The byte takes 1 byte of memory and int takes 4 bytes of memory. Byte. And if you want Java to create an eight- byte memory area to store 100, you have to write 100L. In 32-bit JDK, the overhead is 8 bytes, padded to a multiple of 4 bytes. In C/C++ Character Set Range is From 0–255 Where As In Java Character Set Range is from 0–65535. Go through Java Basic Theory Notes on Data Types before studying these questions. And the remaining byte is treated as a signed byte -- which in the example, is valued at -38. Below is the standard documentation available and a few details of the attributes values . Java int type conversion. In JAVA all primitive wrappers have a SIZE constant, which is in bits, not bytes So you can use SIZE constant to get their size like this: Integer.SIZE, Double.SIZE, Byte.SIZE 1. So we can use floatToIntBits or floatToRawIntBits functions available in the Float class of Java. This is available within R/3 SAP systems depending on the version and release level. A. weakly typed. Examples: Input: 1 Output: "1" Input: 3 Output: "3" Approach 1: (Using + operator) One method is to create a string variable and then append the byte value to the string variable with the help of + operator. However, you can assign any int literal that falls in the range of byte to a byte variable.