영상
개념
package 배열9_개념;
public class 배열9_개념03_배열의주소개념 {
public static void main(String[] args) {
int a = 10;
int b = 20;
int c = 30;
int[] d = {10,20,30};
int[] t1 = {1,2,3};
int[] t2 = {4,5,6};
int[] t3 = {7,8,9};
int[][] t4 = new int[3][];
t4[0] = t1;
t4[1] = t2;
t4[2] = t3;
int[][] arr = new int[3][3]; // 변수 13개 그려져야된다.
System.out.println(arr[0]); // [I@7852e922
arr[0][0] = 10;
arr[0][1] = 20;
arr[0][2] = 30;
System.out.println(arr[1]); // [I@4e25154f
arr[1][0] = 40;
arr[1][1] = 50;
arr[1][2] = 60;
System.out.println(arr[2]); // [I@70dea4e
arr[2][0] = 70;
arr[2][1] = 80;
arr[2][2] = 90;
System.out.println(arr);
for(int i=0; i<arr.length; i++) {
for(int j=0; j<arr[i].length; j++) {
System.out.print(arr[i][j] + " ");
}
System.out.println();
}
System.out.println("-------------------------------");
int num = 10;
int[] test = null;
int[] temp = arr[1];
for(int i=0; i<temp.length; i++) {
System.out.print(temp[i] + " ");
}
}
}
Java
복사
