How to initialize an Array and how to copy the array
By: Saravanan in Java Tutorials on 2010-01-01
In this tutorial we are going to see how to initialize an Array and how to copy the array. Java has several types to initialize an array now we are going to see some types to initializing.
//Array initialization public class Init1 { public static void main(String[] args) { Integer[] value1 = { new Integer(1), new Integer(2), new Integer(3), }; Integer[] value2 = new Integer[] { new Integer(1), new Integer(2),new Integer(3), }; } } //Array Initializers public class Init2 { public static void main(String[] args) { int[] values = { 2, 7, 9 }; System.out.println("values.length = " + values.length); for (int i = 0; i < values.length; i++) { System.out.println("values[" + i + "] = " + values[i]); } String[] Weekdays = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday","Saturday" }; System.out.println("\nWeekdays.length = " + Weekdays.length); for (int i = 0; i < Weekdays.length; i++) { System.out.println("Weekdays[" + i + "] = " + Weekdays[i]); } } } public class CopyEx { public static void main(String[] args) { char[] firstchar = { 'a', 'e', 'w', 'e', 'l', 'c', 'o', 'm', 'e', 'a', 'l', 'l', 'o' }; char[] secondchar = new char[10]; System.arraycopy(firstchar, 2, secondchar, 0, 10); System.out.println(new String(secondchar)); } }
output:
welcome all
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