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import java.util.Arrays;
public class DataExample {
private final String name;
private int age;
private double score;
private String[] tags;
public DataExample(String name) {
this.name = name;
}
public String getName() {
return name;
}
void setAge(int age) {
this.age = age;
}
public int getAge() {
return age;
}
public void setScore(double score) {
this.score = score;
}
public double getScore() {
return score;
}
public String[] getTags() {
return tags;
}
public void setTags(String[] tags) {
this.tags = tags;
}
@Override public String toString() {
return "DataExample(" + name + ", " + age + ", " + score + ", " + Arrays.deepToString(tags) + ")";
}
@Override public boolean equals(Object o) {
if (o == this) return true;
if (o == null) return false;
if (o.getClass() != this.getClass()) return false;
DataExample other = (DataExample) o;
if (name == null ? other.name != null : !name.equals(other.name)) return false;
if (age != other.age) return false;
if (Double.compare(score, other.score) != 0) return false;
if (!Arrays.deepEquals(tags, other.tags)) return false;
return true;
}
@Override public int hashCode() {
final int PRIME = 31;
int result = 1;
final long temp1 = Double.doubleToLongBits(score);
result = (result*PRIME) + (name == null ? 0 : name.hashCode());
result = (result*PRIME) + age;
result = (result*PRIME) + (int)(temp1 ^ (temp1 >>> 32));
result = (result*PRIME) + Arrays.deepHashCode(tags);
return result;
}
public static class Exercise<T> {
private final String name;
private final T value;
private Exercise(String name, T value) {
this.name = name;
this.value = value;
}
public static <T> Exercise<T> of(String name, T value) {
return new Exercise<T>(name, value);
}
public String getName() {
return name;
}
public T getValue() {
return value;
}
@Override public String toString() {
return "Exercise(" + name + ", " + value + ")";
}
@Override public boolean equals(Object o) {
if (o == this) return true;
if (o == null) return false;
if (o.getClass() != this.getClass()) return false;
Exercise<?> other = (Exercise<?>) o;
if (name == null ? other.name != null : !name.equals(other.name)) return false;
if (value == null ? other.value != null : !value.equals(other.value)) return false;
return true;
}
@Override public int hashCode() {
final int PRIME = 31;
int result = 1;
result = (result*PRIME) + (name == null ? 0 : name.hashCode());
result = (result*PRIME) + (value == null ? 0 : value.hashCode());
return result;
}
}
}
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