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Regular expression matchers, searcher, lexers based on deterministic finite automata

There is a newer version: 0.3.3

package com.almondtools.util.structures;

public class Pair {
	
	private L left;
	private R right;

	public Pair(L left, R right) {
		this.left = left;
		this.right = right;
	}
	
	public L getLeft() {
		return left;
	}
	
	public R getRight() {
		return right;
	}

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

	@SuppressWarnings("rawtypes")
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Pair other = (Pair) obj;
		if (left == null) {
			if (other.left != null)
				return false;
		} else if (!left.equals(other.left))
			return false;
		if (right == null) {
			if (other.right != null)
				return false;
		} else if (!right.equals(other.right))
			return false;
		return true;
	}
	
	@Override
	public String toString() {
		return new StringBuilder().append('(').append(left.toString()).append(',').append(right.toString()).append(')').toString();
	}
	
}