How to initialize an array in Java?

Question

I am initializing an array like this:

public class Array {      int data[] = new int[10];      /** Creates a new instance of Array */     public Array() {         data[10] = {10,20,30,40,50,60,71,80,90,91};     }      } 

NetBeans points to an error at this line:

data[10] = {10,20,30,40,50,60,71,80,90,91}; 

How can I solve the problem?

Answer 1

data[10] = {10,20,30,40,50,60,71,80,90,91}; 

The above is not correct (syntax error). It means you are assigning an array to data[10] which can hold just an element.

If you want to initialize an array, try using Array Initializer:

int[] data = {10,20,30,40,50,60,71,80,90,91};  // or  int[] data; data = new int[] {10,20,30,40,50,60,71,80,90,91}; 

Notice the difference between the two declarations. When assigning a new array to a declared variable, new must be used.

Even if you correct the syntax, accessing data[10] is still incorrect (You can only access data[0] to data[9] because index of arrays in Java is 0-based). Accessing data[10] will throw an ArrayIndexOutOfBoundsException.

Answer 2

Try

data = new int[] {10,20,30,40,50,60,71,80,90,91 };