Which of the following statements are valid?a. int i = new int(30);b. double d[] = new double[30];c. char[] r = new char(1..30);d. int i[] = (3, 4, 3, 2);e. float f[] = {2.3, 4.5, 6.6};f. char[] c = new char()

The valid statements from the given options are:

b. double d[] = new double[30]; This is a valid statement in Java. It declares an array of doubles with a size of 30.

e. float f[] = {2.3, 4.5, 6.6}; This is a valid statement in Java. It declares an array of floats and initializes it with the values 2.3, 4.5, and 6.6.

The invalid statements are:

a. int i = new int(30); This is not a valid statement. In Java, you don't use the new keyword to initialize an integer.

c. char[] r = new char(1..30); This is not a valid statement. In Java, the correct syntax to declare an array is new char[30], not new char(1..30).

d. int i[] = (3, 4, 3, 2); This is not a valid statement. In Java, you should use curly braces {} to initialize an array, not parentheses ().

f. char[] c = new char(); This is not a valid statement. In Java, when you declare an array with the new keyword, you need to specify the size of the array in square brackets [].