java

问题 I want to split a flux into two fluxes where the first one has the first item of the original flux and the second one will takes the rest of items. After applying a custom transformation myLogic on each flux I want to combine them into one flux preserving the order of the original flux. Example: S: student S': student after applying myLogic Emitted flux: s1 -> s2 -> s3 -> s4 The first splited flux: s1' => myLogic The second splited flux: s2' -> s3' -> s4' => myLogic The combined flux: s1' ->

问题 I want to split a flux into two fluxes where the first one has the first item of the original flux and the second one will takes the rest of items. After applying a custom transformation myLogic on each flux I want to combine them into one flux preserving the order of the original flux. Example: S: student S': student after applying myLogic Emitted flux: s1 -> s2 -> s3 -> s4 The first splited flux: s1' => myLogic The second splited flux: s2' -> s3' -> s4' => myLogic The combined flux: s1' ->

问题 Given.. List<Foo> copy(List<Foo> foos) { return foos .stream() .map(foo -> new Foo(foo)) .collect(Collectors.toList()); } IntelliJ IDEA 2016.1.1 reports that new Foo(foo) "can be replaced with method reference". I'm aware of the Foo::new syntax for the no-arg constructor, but don't see how I could pass foo in as an argument. I'm surely missing something here. 回答1: I'm aware of the Foo::new syntax for the no-arg constructor That's not what Foo::new does. This expression will expand to what is

问题 I recently started load testing my webapp. I used apache access log sampler. I followed this tutorial. https://jmeter.apache.org/usermanual/jmeter_accesslog_sampler_step_by_step.pdf I am able to make it work. But now the problem i replayed all the get requests in less than 10 mins. I want jmeter to run the get requests based on the time stamp at which the get request is posted. I am not able to find any such configuration online. I can write script to curl the get request at that particular

问题 I recently started load testing my webapp. I used apache access log sampler. I followed this tutorial. https://jmeter.apache.org/usermanual/jmeter_accesslog_sampler_step_by_step.pdf I am able to make it work. But now the problem i replayed all the get requests in less than 10 mins. I want jmeter to run the get requests based on the time stamp at which the get request is posted. I am not able to find any such configuration online. I can write script to curl the get request at that particular

问题 Given.. List<Foo> copy(List<Foo> foos) { return foos .stream() .map(foo -> new Foo(foo)) .collect(Collectors.toList()); } IntelliJ IDEA 2016.1.1 reports that new Foo(foo) "can be replaced with method reference". I'm aware of the Foo::new syntax for the no-arg constructor, but don't see how I could pass foo in as an argument. I'm surely missing something here. 回答1: I'm aware of the Foo::new syntax for the no-arg constructor That's not what Foo::new does. This expression will expand to what is

问题 I recently started load testing my webapp. I used apache access log sampler. I followed this tutorial. https://jmeter.apache.org/usermanual/jmeter_accesslog_sampler_step_by_step.pdf I am able to make it work. But now the problem i replayed all the get requests in less than 10 mins. I want jmeter to run the get requests based on the time stamp at which the get request is posted. I am not able to find any such configuration online. I can write script to curl the get request at that particular

问题 In my project I'm doing some cleanup and decided to move everything to JUnit5. Till this time, I was using @RunWith(JUnitPlatform.class) Now I want to migrate it to @ExtendWith. Is there any equivalent for this JUnitPlatform.class in JUnit5? 回答1: You don't need it anymore when using junit 5. In the junit documentation it states: Annotating a class with @RunWith(JUnitPlatform.class) allows it to be run with IDEs and build systems that support JUnit 4 but do not yet support the JUnit Platform

问题 I get a repeatedly popup to login to Tomcat Manager Application whenever I try running a Java web Project. Putting in the username/password according to server properties (Manager-script) role doesn't work, the retarded server keeps popping up again with authentication required. The server is Tomcat 8.0.27 with Netbeans 8.1 Suggestions anyone? 回答1: You should create manager-gui role and grant it to the user in tomcat-users.xml . <!-- NOTE: By default, no user is included in the "manager-gui"

问题 I get a repeatedly popup to login to Tomcat Manager Application whenever I try running a Java web Project. Putting in the username/password according to server properties (Manager-script) role doesn't work, the retarded server keeps popping up again with authentication required. The server is Tomcat 8.0.27 with Netbeans 8.1 Suggestions anyone? 回答1: You should create manager-gui role and grant it to the user in tomcat-users.xml . <!-- NOTE: By default, no user is included in the "manager-gui"