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in-class livecode #7

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13 changes: 6 additions & 7 deletions src/main/java/io/github/auberonedu/equalsLivecode/App.java
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Original file line number Diff line number Diff line change
Expand Up @@ -11,19 +11,19 @@ public static void main(String[] args) {
// To start, look at Centroid.java
// BEFORE running the code, make a prediction of what the following will print:

Centroid locA = new Centroid(4, 9, "Salamander");
Centroid locB = new Centroid(4, 9, "Salamander");
// Centroid locA = new Centroid(4, 9, null);
// Centroid locB = new Centroid(2, 9, null);

System.out.println("Result of locA == locB " + (locA == locB));
System.out.println("Result of locA.equals(locB) " + locA.equals(locB));
// System.out.println("Result of locA == locB " + (locA == locB));
// System.out.println("Result of locA.equals(locB) " + locA.equals(locB));

//videoDemo();
videoDemo();
}

// We will look at this a bit later in the livecode, please ignore for first part
public static void videoDemo() {
List<char[][]> video = List.of(
// Frame 0: Salamander is at [2, 3] (all locations in [row, column] format)
// Frame 1: Salamander is at [2, 3] (all locations in [row, column] format)
// Food is at [4, 5]
new char[][]{{'.','.','.','.','.','.','.',},
{'.','.','.','.','.','.','.',},
Expand Down Expand Up @@ -94,5 +94,4 @@ public static void videoDemo() {
boolean hasOverlap = !Collections.disjoint(salamanderLocations, foodLocations);
System.out.println("Do the salamander locations overlap with the food locations: " + hasOverlap);
}

}
63 changes: 63 additions & 0 deletions src/main/java/io/github/auberonedu/equalsLivecode/Centroid.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,4 +22,67 @@ public int getC() {
public String getName() {
return name;
}

@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + r;
result = prime * result + c;
// result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}

@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Centroid other = (Centroid) obj;
if (r != other.r)
return false;
if (c != other.c)
return false;
// if (name == null) {
// if (other.name != null)
// return false;
// } else if (!name.equals(other.name))
// return false;
return true;
}

// @Override
// public boolean equals(Object o) {

// // is this equal to o?
// // ensure r, c, and name are all equal between this and o
// // ensure we meet Java equals contract
// if (o == null) return false;

// if (!getClass().equals(o.getClass())) {
// return false;
// }

// Centroid other = (Centroid) o;

// if (r != other.r) return false;
// if (c != other.c) return false;

// //if (!this.name.equals(other.name)) return false;
// if (name == null) {
// return other.name == null;
// // if (other.name == null) {
// // return true;
// // } else {
// // return false
// // };
// }

// return (name.equals(other.name));
// // if (!name.equals(other.name)) return false;
// // else return true;
// }
}