Arrays in 24.java

• Types of arrays

• How to define Arrays
• A method for defining one-dimensional arrays

2. classTest{
4. publicstaticvoid main(String arg []){
6. //数组的静态声明法
8. //int arr [] = {1,3,5,7,9};
12. //数组的动态声明法
14. int arr []=newint[10];
16. System.out.println("arr[]数组的长度是"+ arr.length);
20. for(int i =0; i < arr.length; i++){
22. System.out.println(arr[i]);
24. }
26. }
28. }

Result: The length of the D:\work\src>javac Test.java D:\work\src>java testarr[] array is 100000000000

• A method for defining two-dimensional arrays

2. classTest{
4. publicstaticvoid main(String arg []){
6. //二维数组的定义方法
8. int arr [][]={{1,2,3},{4,5,6},{7,8}};
10. //动态定义
12. int arrl [][]=newint[3][3];
14. for(int i =0; i < arr.length; i++){
16. for(int j =0; j < arr[i].length; j++){
18. System.out.println(arr[i][j]);
20. }
22. }
24. }
26. }

Results: D:\work\src>javac Test.java D:\work\src>java Test12345678

• How to manipulate arrays

From for notes (Wiz)

Arrays in 24.java