大约有 7,700 项符合查询结果（耗时：0.0240秒） [XML]
Reload the path in PowerShell
... "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
Example usage:
> SET JAVA_HOME=c:/java/jdk6
> SET PATH=%JAVA_HOME%/bin
> ECHO %PATH%
c:/java/jdk6/bin
> SET JAVA_HOME=c:/java/jdk8
> refreshenv
Refreshing environment variables from registry for cmd.exe. Please wait...Finished..
>...
How do I get the size of a java.sql.ResultSet?
...
if(rs.last()){
rowCount = rs.getRow();
rs.beforeFirst();
}
:
java.sql.SQLException: Invalid operation for forward only resultset
it's due to by default it is ResultSet.TYPE_FORWARD_ONLY, which means you can only use rs.next()
the solution is:
stmt=conn.createStatement(ResultSet.TYP...
How to see if an object is an array without using reflection?
How can I see in Java if an Object is an array without using reflection?
And how can I iterate through all items without using reflection?
...
How to print color in console using System.out.println?
...
Here are a list of colors in a Java class with public static fields
Usage
System.out.println(ConsoleColors.RED + "RED COLORED" +
ConsoleColors.RESET + " NORMAL");
Note
Don't forget to use the RESET after printing as the effect will remain if it's not...
How to split a string with any whitespace chars as delimiters
What regex pattern would need I to pass to java.lang.String.split() to split a String into an Array of substrings using all whitespace characters ( ' ' , '\t' , '\n' , etc.) as delimiters?
...
Keyboard shortcut to change font size in Eclipse?
...worked for me on some files but not on the ones I cared about: .scala and .java files. The problem turned out to be that eclipse-fonts appears to affect only the "Text Font" setting rather than being aware of the font setting used in the current window. If you have changed the "Java Editor Text Fo...
List vs List
...variance and sub- and supertypes (that is, polymorphism) in general and to Java in particular. This may be well understood by the OP, but just in case, here it goes:
Covariance
If you have a class Automobile, then Car and Truck are their subtypes. Any Car can be assigned to a variable of type Auto...
Could not find method compile() for arguments Gradle
...ation for DependencyHandler linked from http://www.gradle.org/docs/current/javadoc/org/gradle/api/Project.html#dependencies(groovy.lang.Closure) because ModuleDependency.exclude(java.util.Map) method is used.
share
...
Embedded MongoDB when running integration tests
...bution.Version;
import de.flapdoodle.embed.process.runtime.Network;
import java.util.Date;
import org.junit.After;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
public class EmbeddedMongoTest
{
private static final String DATABASE_NAME = "embedded";
priv...
Regex doesn't work in String.matches()
...
Welcome to Java's misnamed .matches() method... It tries and matches ALL the input. Unfortunately, other languages have followed suit :(
If you want to see if the regex matches an input text, use a Pattern, a Matcher and the .find() me...