No, double and float are two different data types in Java.
double is a data type that represents a double-precision floating-point number, which is a number with a decimal point that can be very large or very small. double values are stored using 64 bits (8 bytes) of memory and have a range of approximately +/- 1.7 x 10^308.
float is a data type that represents a single-precision floating-point number, which is a number with a decimal point that can be somewhat large or somewhat small. float values are stored using 32 bits (4 bytes) of memory and have a range of approximately +/- 3.4 x 10^38.
Both double and float are used to represent real numbers in Java, but double has a larger range and greater precision than float. In general, it is recommended to use double unless you have a specific reason to use float, such as to save memory or improve performance in certain situations.
Here is an example of how to declare and use double and float variables in Java:
double d = 3.14; float f = 2.718f; System.out.println(d + f); // prints 5.858
In this example, we declare a double variable d and assign it the value 3.14, and we declare a float variable f and assign it the value 2.718f. The f at the end of the float value is used to indicate that the value is a float and not a double. We then print the sum of d and f using the println method.
For more information on double and float in Java, you can refer to the Java documentation or other online resources.