Recap
Before, we've done a generalization of the design and simulation of the storage unit , here, for example to a variable of type int and then practice it.
The storage unit Interger
I said before, if memory cells can also be said to be an ADT, then it should have the basic features I think are two:
- Save / write
- Taken / readout
By default initialization when you can be, you can also specify a specific initialValue.
Accordingly, it is abstracted into a class can be achieved.
According to this idea that, it is easy to design a storage unit integer friends.
To achieve the realization of class IntCell
public class IntCell {
private int storedValue;
public IntCell() {
this(0);
}
public IntCell(int initialValue) {
storedValue = initialValue;
}
public int read() {
return storedValue;
}
public void write(int x) {
storedValue = x;
}
}
function test
Initialize a number, then one by one to read, write, read:
public class IntCellTest {
public static void main(String [] args) {
IntCell cell = new IntCell(7);
System.out.println("Cell contents: " + cell.read());
cell.write(5);
System.out.println("Cell contents: " + cell.read());
}
}
Test Results:
Cell contents: 7
Cell contents: 5
