Web Reference: Oct 1, 2024 · In Java, when a variable is declared but not initialized, it is assigned a default value based on its data type. The default values for the primitive data types in Java are as follows: byte: 0 short: 0 int: 0 long: 0L float: 0.0f double: 0.0d char: '\u0000' (null character) boolean: false A variable's data type determines the values it may contain, plus the operations that may be performed on it. In addition to int, the Java programming language supports seven other primitive data types. Java supports eight basic primitive data types. This tutorial explains basic primitive data types (int, long, short, byte, char, boolean, float, double) with their size, range and default value.
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