Recent questions tagged Java

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java - Spring MVC Missing matrix variable

I'm trying to add a matrix parameter (or matrix variable) to my Rest Controller using SpringMVC (from Spring ... -( Thanks for your answers! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - access a Local Session Bean from another EAR?

How can I call a Local Session Bean inside an EAR from another EAR, both deployed in the same Glassfish v3 ... help. Thank you in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Cannot return a value from method whose result type is void error

I am trying to take the user input from one method and use it in another. I am confused about the cannot return a ... == -1) { break; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Keeping data view/layout in Android after screen rotate/activity destroyed

I'm a little confused about the Activity being destroyed and recreated when the user's device is rotated. I've ... m not using a layout XML) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to programmatically align an Android TextView to the right of another TextView

In the below code I have created two text views and added them programmatically to a relative layout. I ... textView[1], relativeLayoutParams); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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476 views

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java - Problems with rendering JSP in spring boot

I have a Spring boot application where I want to use jsp Here are my dependencies in pom.xml <parent> <groupId ... ... 25 common frames omitted See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to create table based on JDBC Result Set

I am building a reporting tool and I need to execute queries on remote databases and store the result ... provide the sufficient performance?) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Convert YV12 to NV21 (YUV YCrCb 4:2:0)

How can you convert: YV12 (FOOURCC code: 0x32315659) to NV21 (FOURCC code: 0x3132564E) (YCrCb 4:2:0 Planar) ... byte[] in the other format. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - AsyncTasks do not get collected causing other AsyncTasks to not run

My app uses a lot of AsyncTasks. It is a web app after all. And when I keep track of the Debug tab ... running and clogging up the Executor? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Authentication by certificate for WebFlux?

In the regular Servlet API for Spring Boot Web, there is the .x509() of the HttpSecurity ... username sent to ReactiveUserDetailsService. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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768 views

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java - Big XML file and OutOfMemoryError

I'm trying to parse a XML file up to 500 mb in java. I tried to use SAX but it gives me this error ... P.S. Smaller XML files works just fine See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Verify list elements by Selenium WebDriver

WebElement select = myD.findElement(By.xpath("//*[@id='custfoodtable']/tbody/tr[2]/td/div/select")); List< ... any easier way to do it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Interceptor can't access Action Parameters

I'm creating an example for struts2 interceptors. I created a simple login page and used a custom interceptor class ... correctly on it's own. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

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java - How to import JDBC driver into Dynamic Web Project?

I have a local MySQL database. When I created a simple Java project, with one class which contained only main ... Auto-generated method stub } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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502 views

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java - Print an array elements with 10 elements on each line

I just created an array with 100 initialized values and I want to print out 10 elements on each line so it would be somthing ... [i] + " "); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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668 views

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java - Deprecated code of drools to version 6.2

I have an old and deprectaed code of drools, this code can read a rule file (drl) outside of the container and ... but with drools version 6.2? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - build a simple debugger with jdi to set breakpoints and retrieve the value of a variable

I am looking to build a debugger using java debug interface. My objective is to set a breakpoint and get the value ... i get the value of S See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java Runtime.exec to run shell script - cannot open file

I am using Runtime.getRuntime().exec() to run a shell script from java code. String[] cmd = {"sh", "build ... it. How should I modify this code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Bean property is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter? Spring Batch

I am developing Spring Batch CompositeItemReader & Writer Example. I developed XML file and able to compile ... officeCode; private Integer reportsTo; private String jobTitle;...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Compress bitmap to a specific byte size in Android

Is there a way to compress Bitmap to a specific byte size? For example, 1.5MB. The matter is all the ... go right direction from the beginning. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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500 views

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java - Custom fonts in android

I am trying to use custom fonts in a textview: tv=(TextView)findViewById(res); Typeface font = Typeface. ... be made Whats the issue? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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715 views

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java - Batch File runs manually but not in task scheduler

I have a batch file, which will search for a java process and kill the same. The script works fine when ... scheduler with the same user account See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jackson Generics with variable JsonProperty (usage with generics)

I have class that looks like this: public class Data<U> { @JsonProperty("difficulties") private U[] data; // .. ... to write it in one class? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Deserializing JSON to non-static nested classes using Gson

According to this Gson can deserialize to inner classes. I have the next fragment of JSON string: ... "coordinates ... me where the mistake is? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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566 views

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java - Hibernate/JPA: Is it possible to retrieve heterogeneous entities in a single query?

I have 2 entities: EntityA and EntityB. They are unrelated, and I cannot put them in a Inheritance tree for some ... WHERE fieldB="aa" Any hint? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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java - foreign key problem in jdbc

I have two functions: public void Populate_flights() public void Populate_reservations() Flight and reservations are ... FOREIGN_KEY_CHECKS=1"); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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541 views

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java - Reading txt file from jar fails but reading image works

I have an issue which has been bothering me for days... I checked similar questions but couldn't find a ... :36 EEST 2013 clock/input.txt See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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932 views

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java - ObjectInputStream readObject in while Loop

Is it possible to read from ObjectInputStream in while loop which will terminate by exception thrown by socket ... something with object } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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