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Java 8: Lambda-Streams, Filter by Method with Exception
I have a problem trying out the Lambda expressions of Java 8.
Usually it works fine, but now I have methods that throw IOException 's.
It's best if you look at the following code:
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#ifdef #ifndef in Java
I doubt if there is a way to make compile-time conditions in Java like #ifdef #ifndef in C++.
8 Answers
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What is the difference between the add and offer methods in a Queue in Java?
Take the PriorityQueue for example http://java.sun.com/j2se/1.5.0/docs/api/java/util/PriorityQueue.html#offer(E)
8 Answe...
How can I find and run the keytool
...und a solution by myself as below quote. It works fine.
"C:\Program Files\Java\jdk1.6.0_26\bin\keytool.exe" -exportcert -alias
> sociallisting -keystore "D:\keystore\SocialListing" |
> "C:\cygwin\bin\openssl.exe" sha1 -binary | "C:\cygwin\bin\openssl.exe"
> base64
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How do I generate random integers within a specific range in Java?
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In Java 1.7 or later, the standard way to do this is as follows:
import java.util.concurrent.ThreadLocalRandom;
// nextInt is normally exclusive of the top value,
// so add 1 to make it inclusive
int randomNum = ThreadLocalRan...
Access to private inherited fields via reflection in Java
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This should demonstrate how to solve it:
import java.lang.reflect.Field;
class Super {
private int i = 5;
}
public class B extends Super {
public static void main(String[] args) throws Exception {
B b = new B();
Field f = b.getClass().getSuperclas...
Execute another jar in a Java program
I had written several simple java applications named as A.jar, B.jar.
6 Answers
6
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Easiest way to convert a List to a Set in Java
What is the easiest way to convert a List to a Set in Java?
16 Answers
16
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How can I get the latest JRE / JDK as a zip file rather than EXE or MSI installer? [closed]
...e to be sure that everything will work just by copying the contents of the Java folder and setting the environment variables.
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How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?
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@DiegoPino I am facing same error java.net.BindException: Address already in use (Bind failed) I used lsof -i:8080 and got tcp6 0 0 :::8080 :::* LISTEN 106872/java . What should I do ? Kill java ??
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