Why in Android one should use openFileOutput() method instead of FileOutputStream() constructor? Would the mode type as a second param of openFileOutput() be the only “respectful” reason for all the cases? Answer Would the mode type as a second param of openFileOutput() be the only “respectf…
Content-Type not allowed: fileUpload in Struts 2
I am new to Struts 2 and trying to do use fileUpload interceptor. I am attaching all my code layers Action Class (FileUploadAction): error.jsp: Success.jsp: fileUpload.jsp: I am not understanding why I am getting this error Although my uploading file format is .jpg. Answer You are getting this error probably …
Best practice for configuring Spring LdapTemplate via annotations instead of XML?
For a Spring Boot application, I successfully configured a Spring LdapTemplate using annotations, including the LdapContextSource dependency with @Values from application.properties. (Woot! I couldn’t find an example, so maybe this will help others.) The snippets (below) setup the context source, inject…
How to read multiple integer values from one line in Java using BufferedReader object?
I am using BufferedReader class to read inputs in my Java program. I want to read inputs from a user who can enter multiple integer data in single line with space. I want to read all these data in an integer array. Input format- the user first enters how many numbers he/she want to enter And then multiple int…
NullPointerException received when calling Bundle.getParcelable
I have a problem that I am trying to solve for few hours but cannot solve it and I need some help. I am trying to retrieve URL strings from a Login activity and trying to pass it to the Main activity using a parcelable object but I receive NullPointerException on getParcelable method. Following is the code th…
Duplication on ArrayList Java
my title is bad but I don’t have an idea what it should be. My question is simple, I have four arraylist and I want to get similar words from two of them and put another arraylists. Anyway my array lists like; I tried this; But as you see arrList1 and arrList2 have duplicates so arrList4 will have same …
Possibility to explicit remove Serialization support for a lambda
As already known it’s easy to add Serialization support to a lambda expression when the target interface does not already inherit Serializable, just like (TargetInterface&Serializable)()->{/*code*/}. What I ask for, is a way to do the opposite, explicitly remove Serialization support when the target in…
How to display in JSP a list obtained from Hibernate query
I am creating an struts hibernate application. I have obtained a list using hibernate query and passed it in action class. But I don’t know how to display it in JSP. I have successfully getting the …
java.lang.NoClassDefFoundError: javax/json/Json
I have a simple Java project where I would like to build a Json string. For this, I use javax.json: The project is build with maven, and in the pom I have added these dependencies: Compilation is ok. When I execute the code using that command: The main is in MyClass. I get: on the call to Json.createObjectBui…
This compilation unit is not on the build path of a Java project
When I try to use ctrl+space this error is shown: I see that there are similar topics but my work environment is Eclipse and i pull my project from Git (I import project as general project) and i use Apache Ant. Can anyone help me? Answer Since you imported the project as a General Project, it does not have t…