Update Int class examples

Author: Ben Keller

src/main/java/math/Int.java

@@ -4,13 +4,15 @@ public class Int {
 
   private final int value;
 
+
+  @Override
   public String toString() {
     return Integer.toString(value);
   }
 
   private Int() {
     this.value = 0;
-  }
+  } //hidden
 
   public Int(int value) {
     this.value = value;
@@ -20,4 +22,7 @@ public Int add(Int other) {
     return new Int(this.value + other.value);
   }
 
+  public int getIntValue() {
+    return value;
+  }
 }

src/main/java/math2/Int.java

@@ -0,0 +1,36 @@
+package math2;
+
+public class Int {
+
+  private final int value;
+
+
+  @Override
+  public boolean equals(Object other) {
+    if (other instanceof Int) {
+      return true;
+    }
+    return false;
+  }
+
+  @Override
+  public String toString() {
+    return Integer.toString(value);
+  }
+
+  private Int() {
+    this.value = 0;
+  } //hidden
+
+  public Int(int value) {
+    this.value = value;
+  }
+
+  public Int add(Int other) {
+    return new Int(this.value + other.value);
+  }
+
+  public int getIntValue() {
+    return value;
+  }
+}

src/main/java/math3/Int.java

@@ -0,0 +1,33 @@
+package math3;
+
+public class Int {
+
+  private final int value;
+
+
+  @Override
+  public String toString() {
+    return Integer.toString(value);
+  }
+
+  private Int() {
+    this.value = 0;
+  } //hidden
+
+  public void dontCallMe() {
+    System.err.println("this method calls System.exit()");
+    System.exit(1);
+  }
+
+  public Int(int value) {
+    this.value = value;
+  }
+
+  public Int add(Int other) {
+    return new Int(this.value + other.value);
+  }
+
+  public int getIntValue() {
+    return value;
+  }
+}