Menu
How can I pass an entire array to a method?
private void PassArray() { String[] arrayw = new String[4]; //populate array PrintA(arrayw[]); } private void PrintA(String[] a) { //do whatever with array here } How do I do this correctly?
599
Passing Two-dimensional Arrays to Methods in Java While calling a method with two-dimensional array parameter list, just pass array name to the method like this: object-reference. show(x); Here, object-reference is a reference to an object of underlying class and x is a two-dimensional array declared in the program.
You can pass an entire array, or a single element from an array, to a method. Notice that the int [ ] indicates an array parameter. Notice that passing a single array element is similar to passing any single value. Only the data stored in this single element is passed (not the entire array).
Explanation: When sending an array to a method, the method receives the array's reference. The array reference is returned when a method returns an array. Arrays are provided to methods in the same way that regular variables are.
Everything in Java is passed by value. In case of an array (which is nothing but an Object), the array reference is passed by value (just like an object reference is passed by value). When you pass an array to other method, actually the reference to that array is copied.
You do this:
private void PassArray() { String[] arrayw = new String[4]; //populate array PrintA(arrayw); } private void PrintA(String[] a) { //do whatever with array here } Just pass it as any other variable.
In Java, arrays are passed by reference.
199
Simply remove the brackets from your original code.
PrintA(arryw); private void PassArray(){ String[] arrayw = new String[4]; //populate array PrintA(arrayw); } private void PrintA(String[] a){ //do whatever with array here } That is all.
35
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
