Other Operators - Java Tutorial 5.0 英文版

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Trail: Learning the Java Language
Lesson: Language Basics

Other Operators

The Java programming language also supports the operators in the next table.

Other Operators
Operator Use Description

?: op1 ? op2 : op3 If op1 is true, returns op2; otherwise, returns op3

[] See Creating and Using Arrays Used to declare arrays, to create arrays, and to access array elements

. See Using Objects Used to form long names

(params) See Defining Methods Delimits a comma-separated list of parameters

(type) (type) op Casts (converts) op to the specified type; an exception is thrown if the type of op is incompatible with type

new See Using Objects and Creating and Using Arrays Creates a new object or array

instanceof op1 instanceof op2 Returns true if op1 is an instance of op2

**Other Operators**
Operator	Use	Description
`?:`	`op1 ? op2 : op3`	If `op1` is `true`, returns `op2`; otherwise, returns `op3`
`[]`	See Creating and Using Arrays	Used to declare arrays, to create arrays, and to access array elements
`.`	See Using Objects	Used to form long names
`(`params`)`	See Defining Methods	Delimits a comma-separated list of parameters
`(`type`)`	`(`type`) op`	Casts (converts) `op` to the specified type; an exception is thrown if the type of `op` is incompatible with type
`new`	See Using Objects and Creating and Using Arrays	Creates a new object or array
`instanceof`	`op1 instanceof op2`	Returns `true` if `op1` is an instance of `op2`

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