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Get type of a generic parameter in Java with reflection
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I get this exception : Exception in thread "main" java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType not sure what is the constraint .
– Dish
Feb 29 '16 at 14:25
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Should methods in a Java interface be declared with or without a public access modifier?
Should methods in a Java interface be declared with or without the public access modifier?
12 Answers
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Is a Java string really immutable?
We all know that String is immutable in Java, but check the following code:
15 Answers
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How to read json file into java with simple JSON library
I want to read this JSON file with java using json simple library.
13 Answers
13
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
...rtificate by adding -v option.
use the following code:-
C:\Program Files\Java\jdk1.7.0\bin>keytool -v -list -alias
androiddebugkey -keystore debug.keystore -storepass android -keypass android
it will output MD5 certificate as well.
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How to convert List to int[] in Java? [duplicate]
This is similar to this question:
How to convert int[] to Integer[] in Java?
16 Answers
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How to POST raw whole JSON in the body of a Retrofit request?
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I am getting this exception java.lang.IllegalArgumentException: Unable to create @Body converter for class MatchAPIRequestBody (parameter #1)
– Shajeel Afzal
Jan 24 '17 at 9:59
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Spark java.lang.OutOfMemoryError: Java heap space
...n google myself easier) The following is also indicative of this problem:
java.lang.OutOfMemoryError : GC overhead limit exceeded
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How to read a text-file resource into Java unit test? [duplicate]
...ach case.
Quick way in JSE 6 - Simple & no 3rd party library!
import java.io.File;
public class FooTest {
@Test public void readXMLToString() throws Exception {
java.net.URL url = MyClass.class.getResource("test/resources/abc.xml");
//Z means: "The end of the input but for th...
Java Runtime.getRuntime(): getting output from executing a command line program
I'm using the runtime to run command prompt commands from my Java program. However, I'm not aware of how I can get the output the command returns.
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