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Explanation

SpEL can access properties of Java objects using dot notation.

Code:

#{user.name}
#{user.email}
#{user.address.city}

Explanation

SpEL can invoke methods on objects.

Code:

#{user.getName()}
#{'spring boot'.toUpperCase()}
#{'hello'.length()}

Explanation

Nested object navigation allows an expression to access properties several levels deep.

Code:

#{employee.department.manager.name}

Explanation

Safe navigation can be used when an intermediate object might be null.

Code:

#{employee?.department?.manager?.name}

Explanation

SpEL can access collection elements using index-based navigation.

Code:

#{employees[0].name}
#{employees[1].name}