How to parse the string into map

Question

have a string like A=B&C=D&E=F, how to parse it into map?

Answer 1

public class TestMapParser {
    @Test
    public void testParsing() {
        Map map = parseMap("A=B&C=D&E=F");
        Assert.assertTrue("contains key", map.containsKey("A"));
        Assert.assertEquals("contains value", "B", map.get("A"));

        Assert.assertTrue("contains key", map.containsKey("C"));
        Assert.assertEquals("contains value", "D", map.get("C"));

        Assert.assertTrue("contains key", map.containsKey("E"));
        Assert.assertEquals("contains value", "F", map.get("E"));
    }

    private Map parseMap(final String input) {
        final Map map = new HashMap();
        for (String pair : input.split("&")) {
            String[] kv = pair.split("=");
            map.put(kv[0], kv[1]);
        }
        return map;
    }
}