在 jshell 启动时加载脚本的不同方法
Different ways to load script on jshell startup
根据文档,
There’s also the option to load a script on startup, including some special predefined options. These are specified using the —startup flag, passing in either a filename or one of:
DEFAULT – load the default behavior. This acts the same as if this is not specified at all
JAVASE – Imports all Java SE packages by default
PRINTING – defines the functions print, println and printf for use
但是,当我使用 DEFAULT、JAVASE 或 PRINTING 选项启动 jshell 时,我可以在所有情况下导入类似的 类。
例如JAVASE涉及的主要包java.lang、java.security等,在其他选项中也有。请找到以下快照:
kv:micro-tab karan.verma$ jshell --startup JAVASE
| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro
jshell> import javax.security.
auth cert sasl
jshell> /exit
| Goodbye
kv:micro-tab karan.verma$ jshell --startup DEFAULT
| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro
jshell> import javax.security
security
jshell> import javax.security.
auth cert sasl
jshell> /exit
| Goodbye
kv:micro-tab karan.verma$ jshell --startup PRINTING
| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro
jshell> import javax.security.
...>
auth cert sasl
我是否以正确的方式使用这些选项?
或者这些还有别的意思?
您程序中的断言方法不正确。区分这些预定义脚本的正确方法是使用
/list -start
查看所有启动片段的评估结果。
例如:-
根据文档,
There’s also the option to load a script on startup, including some special predefined options. These are specified using the —startup flag, passing in either a filename or one of:
DEFAULT – load the default behavior. This acts the same as if this is not specified at all
JAVASE – Imports all Java SE packages by default
PRINTING – defines the functions print, println and printf for use
但是,当我使用 DEFAULT、JAVASE 或 PRINTING 选项启动 jshell 时,我可以在所有情况下导入类似的 类。
例如JAVASE涉及的主要包java.lang、java.security等,在其他选项中也有。请找到以下快照:
kv:micro-tab karan.verma$ jshell --startup JAVASE
| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro
jshell> import javax.security.
auth cert sasl
jshell> /exit
| Goodbye
kv:micro-tab karan.verma$ jshell --startup DEFAULT
| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro
jshell> import javax.security
security
jshell> import javax.security.
auth cert sasl
jshell> /exit
| Goodbye
kv:micro-tab karan.verma$ jshell --startup PRINTING
| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro
jshell> import javax.security.
...>
auth cert sasl
我是否以正确的方式使用这些选项? 或者这些还有别的意思?
您程序中的断言方法不正确。区分这些预定义脚本的正确方法是使用
/list -start
查看所有启动片段的评估结果。
例如:-