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What is the difference between classes and structs in Java?

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Structures are value types; classes are reference types
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IT Professional Trainer with 13 years of experience in IT Industry

Structures are value types; ex any text or number classes are reference types. A variable of a structure type contains the structure's data, rather than containing a reference to the data as a class type does. Structures use stack allocation; classes use heap allocation in memory
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Structures are value types; ex any text or number classes are reference types. A variable of a structure type contains the structure's data, rather than containing a reference to the data as a class type does. Structures use stack allocation; classes use heap allocation in memory read less
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IT Professional Trainer with 21 years of experience in education field

struct is the stadrad mapping in the Java programming language for an SQL structured type. A Struct object contains a value for each attribute of the SQL structured type that it represents. By default, an instance of Struct is valid as long as the application has a reference to it. Structures are...
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struct is the stadrad mapping in the Java programming language for an SQL structured type. A Struct object contains a value for each attribute of the SQL structured type that it represents. By default, an instance of Struct is valid as long as the application has a reference to it. Structures are value types; classes are reference types. A variable of a structure type contains the structure's data, rather than containing a reference to the data as a class type does. Structures use stack allocation; classes use heap allocation. read less
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Quantitative Aptitude and General Science teacher with 4 year experience

In Java, classes are the primary building blocks for object-oriented programming, supporting inheritance, polymorphism, and encapsulation, with objects stored as reference types on the heap. Java does not have structs like C++ or C#, which are value types used for lightweight data storage without complex...
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In Java, classes are the primary building blocks for object-oriented programming, supporting inheritance, polymorphism, and encapsulation, with objects stored as reference types on the heap. Java does not have structs like C++ or C#, which are value types used for lightweight data storage without complex behavior. Instead, Java uses classes for all data structures, and since Java 14, records offer a concise alternative for immutable data, though they’re still classes. Thus, while classes in Java are versatile and dynamic, there’s no direct struct equivalent. read less
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