大约有 1,633 项符合查询结果（耗时：0.0301秒） [XML]
Jackson JSON custom serialization for certain fields
...rks but FloatSerializer brings this message: Could not write content: java.lang.Integer cannot be cast to java.lang.Float
– Arnie Schwarzvogel
May 19 '18 at 14:54
add a commen...
Java 8 Streams - collect vs reduce
... not work with BigDecimal but only with MutableInt from org.apache.commons.lang.mutable for example. See:
public class Employee {
private MutableInt salary;
public Employee(String aSalary){
this.salary = new MutableInt(aSalary);
}
public MutableInt getSalary(){
return this.salary;
...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
... Correct explanation. Similar discussions on ruby-core: redmine.ruby-lang.org/issues/4245 , redmine.ruby-lang.org/issues/4541
– Marc-André Lafortune
Sep 7 '11 at 18:12
18
...
How to obtain the start time and end time of a day?
...thod localDateTimeToDate(LocalDateTime startOfDay) throws Exception - java.lang.IllegalArgumentException: java.lang.ArithmeticException: long overflow
– sanluck
Sep 20 '16 at 3:50
...
How to write a CSS hack for IE 11? [duplicate]
...
_:-ms-fullscreen, :root .foo { property:value; }
IE 10 and above
_:-ms-lang(x), .foo { property:value; }
or
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
.foo{property:value;}
}
IE 10 only
_:-ms-lang(x), .foo { property:value\9; }
IE 9 and above
@media scree...
Determine which JAR file a class is from
...f the class file itself. For example:
jar:file:/jdk/jre/lib/rt.jar!/java/lang/String.class
file:/projects/classes/pkg/MyClass$1.class
The getProtectionDomain().getCodeSource().getLocation() method returns the location of the jar file or CLASSPATH
file:/Users/home/java/libs/ejb3-persistence-1....
How can I use pointers in Java?
... very rare and usually results from run-away recursion.
Note that, from a language point of view, abandoning objects to the garbage collector are not errors at all. It is just something that the programmer needs to be aware of. The same variable can point to different objects at different times and...
static allocation in java - heap, stack and permanent generation
... arrays associated with the class, internal objects used by JVM (like java/lang/Object) and optimization information goes into the Permanent Generation area.
More or less, yes. I'm not sure what you mean by some of those things. I'm guessing that "internal objects used by JVM (like java/lang/Obj...
Groovy: what's the purpose of “def” in “def x = 0”?
...2
assert y == 2
try {
this.binding.getVariable("y")
} catch (groovy.lang.MissingPropertyException e) {
println "error caught"
}
Prints: "error caught"
Using the def keyword in larger programs is important as it helps define the scope in which the variable can be found and can help pre...
IN vs OR in the SQL WHERE Clause
...swered Jun 19 '10 at 7:22
Peter LangPeter Lang
49.3k2626 gold badges138138 silver badges152152 bronze badges
...