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How to check if an int is a null
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An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can't ...
Git merge errors
...o was a bad idea after all, you can put things back to normal with:
git reset --merge
However, otherwise you should resolve those merge conflicts, as described in the git manual.
Once you've dealt with that by either technique you should be able to checkout the 9-sign-in-out branch. The probl...
Java Keytool error after importing certificate , “keytool error: java.io.FileNotFoundException & Acc
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setting the tomcat directory to read-only will cause this exception
– svarog
Nov 18 '17 at 20:25
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Group a list of objects by an attribute : Java
...ent>());
}
groupedStudents.get(key).add(student);
}
//print
Set<String> groupedStudentsKeySet = groupedCustomer.keySet();
for (String location: groupedStudentsKeySet) {
List<Student> stdnts = groupedStudents.get(location);
for (Student student : stdnts) {
Sys...
Determine direct shared object dependencies of a Linux binary?
...endencies as NEEDED sections.
$ readelf -d elfbin
Dynamic section at offset 0xe30 contains 22 entries:
Tag Type Name/Value
0x0000000000000001 (NEEDED) Shared library: [libssl.so.1.0.0]
0x0000000000000001 (NEEDED) Shared library: [libc.so....
How to structure a express.js application?
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It would be cool to upload a sample setup to github for us to look at. What goes in Routes folder/files?
– chovy
Oct 11 '11 at 23:06
1
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Convert JSON String to JSON Object c#
I have this String stored in my database:
8 Answers
8
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OnChange event handler for radio button (INPUT type=“radio”) doesn't work as one value
...a note on why I chose this as the correct answer: Click event handlers are set up on each of the radio buttons with the name attribute myRadios to read the variable prev which holds the currently selected radio. A comparison is done within each click handler to decide if the clicked radio is the sam...
In vim, how do I go back to where I was before a search?
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I've always done by it setting a mark.
In command-mode, press m[letter]. For example, ma sets a mark at the current line using a as the mark identifier.
To get back to the mark press ' [letter]. For example, 'a takes you back to the line mark s...
Using git, how do I ignore a file in one branch but have it committed in another branch?
...ct does not use .gitignore. Do you mind providing a transcript of commands setting this up from scratch (git init, ...), and the version of Git you used?
– Davor Cubranic
Jan 18 '12 at 21:42
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