Arrays

Declare

---

int[] a1;
int[] a2 = {1, 2, 3};
int[] a3 = new int[]{1, 2, 3};
 
int[] a4 = new int[3];
a4[0] = 1;
a4[2] = 2;
a4[3] = 3;

Multidimensional

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int[][] matrix = { {1, 2, 3}, {4, 5} };
 
int x = matrix[1][0];  // 4
// [[1, 2, 3], [4, 5]]
Arrays.deepToString(matrix)
 
for (int i = 0; i < a.length; ++i) {
	for(int j = 0; j < a[i].length; ++j) {
		System.out.println(a[i][j]);
	}
}
// Outputs: 1 2 3 4 5 6 7 
 

Methoden

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char[] chars = {'b', 'a', 'c'};
Arrays.sort(chars);
Arrays.toString(chars);