Sandbox. compareTo

Author: SkyrocketStan

SandBox/src/com/rakitov/sandbox/comparators/Woman.java

@@ -0,0 +1,43 @@
+package com.rakitov.sandbox.comparators;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * @author Stanislav Rakitov
+ */
+public class Woman implements Comparable<Woman>{
+  private final int age;
+
+  public Woman(int age) {
+    this.age = age;
+  }
+
+  @Override
+  public int compareTo(Woman woman) {
+    return this.age - woman.age;
+  }
+
+  public static void main(String[] args) {
+    List<Woman> women = new ArrayList<>();
+    women.add(new Woman(57));
+    women.add(new Woman(27));
+    women.add(new Woman(17));
+    women.add(new Woman(43));
+
+    System.out.println("Before sort");
+    women.forEach(System.out::println);
+    System.out.println("\nAfter sort");
+    Collections.sort(women);
+    women.forEach(System.out::println);
+
+  }
+
+  @Override
+  public String toString() {
+    return "Woman age of " + age;
+  }
+}
+
+