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Java is a statically typed language, meaning variable types are determined at compile time. Data types in Java are categorized into Primitive Data Types and Non-Primitive (Reference) Data Types.
Primitive Data Types
Primitive data types are the building blocks of data manipulation in Java. They store simple values directly in memory and are predefined by the language. There are 8 primitive data types:
1. byte
Size: 1 byte (8 bits)
Range: -128 to 127
Example:
byte age = 25;System.out.println("Age: " + age);コピーしました。✕コピー2. short
Size: 2 bytes (16 bits)
Range: -32,768 to 32,767
Example:
short num = 1000;System.out.println("Number: " + num);コピーしました。✕コピー3. int
Size: 4 bytes (32 bits)
Range: -2,147,483,648 to 2,147,483,647
Example:
int population = 2000000;System.out.println("Population: " + population);コピーしました。✕コピー4. long
Size: 8 bytes (64 bits)
Range: -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
Example:
long distance = 9460730472580800L;System.out.println("Distance: " + distance);コピーしました。✕コピー5. float
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2 日前 · Primitive data types store simple values directly in memory. Java provides eight primitive data types, each with a fixed size and range, which are summarized below:
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Primitive Data Types A primitive data type specifies the type of a variable and the kind of values it can hold. There are eight primitive data types in Java:
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