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Java FileOutputStream Create File if not exists
Is there a way to use FileOutputStream in a way that if a file (String filename) does not exist, then it will create it?
9 ...
ViewParam vs @ManagedProperty(value = “#{param.id}”)
...ditional <f:event type="preRenderView" listener="#{bean.init}" /> inside the <f:metadata> to do initialization/preloading based on the set values. Since JSF 2.2 you could use <f:viewAction> for that instead.
Allows for nested <f:converter> and <f:validator> for more fi...
What's the difference between := and = in Makefile?
...y that := is more efficient? Or is efficiency not really a factor with Makefiles?
– Ungeheuer
Apr 27 '17 at 14:45
3
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Find the index of a dict within a list, by matching the dict's value
... name (using a dictionary), this way get operations would be O(1) time. An idea:
def build_dict(seq, key):
return dict((d[key], dict(d, index=index)) for (index, d) in enumerate(seq))
info_by_name = build_dict(lst, key="name")
tom_info = info_by_name.get("Tom")
# {'index': 1, 'id': '2345', 'na...
read complete file without using loop in java
I am trying to read the contents of a file using FileReader . But i want to read the file without reading a line by line . Is it possible to read the whole file without loop.
I am using the following code
...
How can I get a resource “Folder” from inside my jar File?
...folder/package in the root of my project, I "don't" want to load a certain File. If I wanted to load a certain File, I would use class.getResourceAsStream and I would be fine!! What I actually want to do is to load a "Folder" within the resources folder, loop on the Files inside that Folder and get ...
How to store arrays in MySQL?
...ables and JOIN them in your queries.
For example:
CREATE TABLE person (
`id` INT NOT NULL PRIMARY KEY,
`name` VARCHAR(50)
);
CREATE TABLE fruits (
`fruit_name` VARCHAR(20) NOT NULL PRIMARY KEY,
`color` VARCHAR(20),
`price` INT
);
CREATE TABLE person_fruit (
`person_id` INT NOT NULL,
`fruit_name`...
How do I update an entity using spring-data-jpa?
...
Identity of entities is defined by their primary keys. Since firstname and lastname are not parts of the primary key, you cannot tell JPA to treat Users with the same firstnames and lastnames as equal if they have different u...
How do I iterate through the files in a directory in Java?
I need to get a list of all the files in a directory, including files in all the sub-directories. What is the standard way to accomplish directory iteration with Java?
...
What optimizations can GHC be expected to perform reliably?
...rt System.Environment]
ms_srcimps = []
}]
*** Deleting temp files:
Deleting:
compile: input file SleepSort.hs
Created temporary directory: /tmp/ghc4784_0
*** Checking old interface for main:Main:
[1 of 1] Compiling Main ( SleepSort.hs, SleepSort.o )
*** Parser:
*** Rename...