/Java/Comparable on a generic class java

Comparable on a generic class java

    public class DoubleKey<K extends Comparable<K>, J extends Comparable<J>>
        implements Comparable<DoubleKey<K, J>> {

    private K key1;
    private J key2;

    public DoubleKey(K key1, J key2) {
        this.key1 = key1;
        this.key2 = key2;
    }

    public K getFirstKey() {
        return this.key1;
    }

    public J getSecondKey() {
        return this.key2;
    }

    public int compareTo(DoubleKey<K, J> that) {

        int cmp = this.getFirstKey().compareTo(that.getFirstKey());
        if (cmp == 0)
            cmp = this.getSecondKey().compareTo(that.getSecondKey());
        return cmp;
    }
}

Source: stackoverflow.com

Similar codes

1 vote188 views2 answers
Java generate random id
Java
0 vote245 views1 answer
TestException = com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field
Java
1 vote185 views1 answer
Mockito mock void methods
Java
0 vote208 views4 answers
Java manipulate alphabet list
Java
8 votes183 views1 answer
Alertdialog show in android
Java
3 votes269 views1 answer
How to change font size in JLabel
Java
0 vote227 views1 answer
How to check java version by cmd
Java
69 votes182 views1 answer
Systemtime java
Java
3 votes265 views2 answers
Array.swap java
Java
8 votes276 views3 answers
Printing arraylist
Java