大约有 7,479 项符合查询结果（耗时：0.0169秒） [XML]
How to avoid “ConcurrentModificationException” while removing elements from `ArrayList` while iterat
... Funny, I got same exception on String str = iter.next(); ! Java with collections sucks !
– Al-Mothafar
Jan 17 '15 at 14:23
1
...
Java using enum with switch statement
...part you're missing is converting from the integer to the type-safe enum. Java will not do it automatically. There's a couple of ways you can go about this:
Use a list of static final ints rather than a type-safe enum and switch on the int value you receive (this is the pre-Java 5 approach)
Swit...
What are all the different ways to create an object in Java?
...
There are four different ways to create objects in java:
A. Using new keyword
This is the most common way to create an object in java. Almost 99% of objects are created in this way.
MyObject object = new MyObject();
B. Using Class.forName()
If we know the name of the cla...
What does a tilde in angle brackets mean when creating a Java generic class?
...
Just for personal clarification - IntelliJ produces Java source files with this notation, iaw, source files with illegal Java content??? Or is this just the view of the source and the saved file is correct?
– Andreas Dolk
Feb 3 '11 at 15:...
What is the difference between the Eclipse Package Explorer and the Eclipse Project Explorer?
...tomized by the specific
configuration of your Workbench.
With only the java developer tools (JDT) installed the Project Explorer nearly looks and behaves for java projects as the Package Explorer (including refactoring and other source code operations in the context menu). But Project Explorer i...
Why charset names are not constants?
...
Two years later, and Java 7's StandardCharsets now defines constants for the 6 standard charsets.
If you are stuck on Java 5/6, you can use Guava's Charsets constants, as suggested by Kevin Bourrillion and Jon Skeet.
...
Why is January month 0 in Java Calendar?
In java.util.Calendar , January is defined as month 0, not month 1. Is there any specific reason to that ?
16 Answers
...
Reading a simple text file
...
try this,
package example.txtRead;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.L...
Does java have a int.tryparse that doesn't throw an exception for bad data? [duplicate]
... success of which is indicated by the boolean return value of the method. Java does not have an equivalent to the out parameter, thus the need for the if logic shown in this answer. msdn.microsoft.com/en-us/library/f02979c7(v=vs.110).aspx
– Peter Howe
Nov 24 ...
Cleanest way to toggle a boolean variable in Java?
Is there a better way to negate a boolean in Java than a simple if-else?
9 Answers
9
...