Java array assignment (multiple values)

Question

I have a Java array defined already e.g.

float[] values = new float[3];

I would like to do something like this further on in the code:

Answer 1

If you know the values at compile time you can do :

float[] values = {0.1f, 0.2f, 0.3f};

There is no way to do that if values are variables in runtime.

Answer 2

int a[] = { 2, 6, 8, 5, 4, 3 }; 
int b[] = { 2, 3, 4, 7 };

if you take float number then you take float and it's your choice

this is very good way to show array elements.

Answer 3

This should work, but is slower and feels wrong: System.arraycopy(new float[]{...}, 0, values, 0, 3);

Answer 4

On declaration you can do the following.

float[] values = {0.1f, 0.2f, 0.3f};

When the field is already defined, try this.

values = new float[] {0.1f, 0.2f, 0.3f};

Be aware that also the second version creates a new array. If values was the only reference to an already existing field, it becomes eligible for garbage collection.