Java Basic interview question: Can the switch statement function on a byte, can it function on a long, and function on a string?

Source: Internet
Author: User

 PackageCom.swift; Public classSwitch_test { Public Static voidMain (string[] args) {/** Can the switch statement function on a byte, can it function on a long, or can it be on a string? */        byteZijie = 3;        System.out.println (Zijie); LongChangzheng=3; Switch(Changzheng) {//cannot switch on a value of type long.         CaseA: System.out.println ("This is a.");  Break;  Case0: System.out.println ("This is 0 int");  Break;  Case3: System.out.println ("This is 0 int");  Break; default: System.out.println ("This is default."); }    }}

A byte short char is both a type that can be implicitly int, and their wrapper class

Long No.

String is also possible, requiring a string type in case

 PackageCom.swift; Public classSwitch_test { Public Static voidMain (string[] args) {/** Can the switch statement function on a byte, can it function on a long, or can it be on a string? */        byteZijie = 3;        System.out.println (Zijie); LongChangzheng=3; String Str= "ABC"; Switch(str) {//cannot switch on a value of type long.         Case"AB": System.out.println ("This is a.");  Break;  CaseA: System.out.println ("This is 0 int");  Break;  Case"ABC": System.out.println ("This is ABC int");  Break; default: System.out.println ("This is default."); }    }}

Java Basic interview question: Can the switch statement function on a byte, can it function on a long, and function on a string?

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