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Betrachten Sie die Klasse Speicherverwaltung.
public class Speicherverwaltung {
public static void swap(int x, int y) {
int c = x;
x = y;
y = c;
// *2*
}
public static void swapInArray(int[] numbers, int i, int j) {
int c = numbers[i];
numbers[i] = numbers[j];
numbers[j] = c;
// *5*
}
public static void swapArrays(int[] numbers1, int[] numbers2) {
int[] c = numbers1;
numbers1 = numbers2;
numbers2 = c;
// *8*
}
public static void main(String[] args) {
{
int x = 1;
// *0*
int y = 2;
// *1*
swap(x, y);
// *3*
System.out.print("x = " + x + ", y = " + y);
}
{
System.out.print("\n");
int[] values = { 4, 5, 6, 7, 8 };
// *4*
swapInArray(values, 2, 4);
for (int i = 0; i < values.length; i++) {
System.out.print(values[i]);
if (i != values.length - 1) {
System.out.print(", ");
}
}
// *6*
}
{
System.out.print("\n");
int[] numbers1 = { 1 };
int[] numbers2 = { 2 };
// *7*
System.out.println("numbers1 = " + numbers1 + ", numbers2 = "
+ numbers2);
swapArrays(numbers1, numbers2);
// *9*
System.out.println("numbers1 = " + numbers1 + ", numbers2 = "
+ numbers2);
}
}
}