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Returning an array from a method in java?


By : ebchandar
Date : August 01 2020, 02:00 PM
seems to work fine If you want to see output in your console, you need to send it to either the system's output stream (appropriate in this case), or the error stream.
code :
int[] newArray = {1,5,9,7,8,0,3,2};
newArray = reverse(newArray);     // <- reuse the variable to save memory
System.out.println(Arrays.toString(newArray));


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Java - Returning an array from a method to main


By : user2750963
Date : March 29 2020, 07:55 AM
To fix this issue Would be glad if someone can help me with the following problem. The following method is suppose to returns an array whose ith entry is the number of times the int i appeared in array a. The method name gives the use of this method. Drawing a histogram of data found in array a. , You should try returning array of ints instead of a single integer
code :
public static int[] histogram ...
int[] b = histogram(param1, param2);

Returning an array from a Java method


By : user3564694
Date : March 29 2020, 07:55 AM
this one helps. Your code looks fine, but try not to use an array if you only need a pair.
Since Java doesn't have tuples/pairs you have to implement them, but it's pretty easy. Refer to this question for a possible implementation.
code :
public class Test {

    public static void main(String args[]) {
        int width = getDimension().getLeft();
        System.out.println(width);
    }

    public static Pair<Integer, Integer> getDimension() {
        int shapeWidth = 5;
        int shapeHeight = 10;
        return new Pair<Integer, Integer>(shapeWidth, shapeHeight);
    }
}

Java - Returning constructor method with array


By : Aaro
Date : March 29 2020, 07:55 AM
To fix this issue I have 2 files, one of which request user input, and one of which returns array values based on user input. I'm having an issue returning my array. I'm only receiving specific elements within each array, although I'd like to return the whole thing. Do you see what I'm missing? .
code :
   public String getService() {
       return sortByDesc[5][2];
   }
    public String [][] getService() {
       return sortByDesc;
   }

How to call a C++ method returning an array from JNI and convert the contents of the array to an array of java classes?


By : user3093308
Date : March 29 2020, 07:55 AM
may help you . Isn't this what you're after? How to return an array from JNI to Java?
Here are some more detailed examples: https://www3.ntu.edu.sg/home/ehchua/programming/java/JavaNativeInterface.html#zz-6.2
code :
jclass cls = (*env)->FindClass(env, "...your class...");
jmethodID ctor = (*env)->GetMethodID(env, cls, "<init>", "...your ctor signature...");
jobject obj = (*env)->NewObject(env, cls, ctor, ...);
jobjectArray results = (*env)->NewObjectArray(env, 100, cls, NULL);
(*env)->SetObjectArrayElement(env, results, 0, obj);

Java: Returning an array from a method


By : Fyre Hawk
Date : March 29 2020, 07:55 AM
it helps some times The moment you define your method, you decide what you return
So by saying public Country createCountry() you basically say I'll return a Country object.
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