Using the LutBuilder to statically generate code & compile & use a LookupTable Class replacing a Map lookup with switch code

use.jdraft.lut.LutBuilderTest.java

package use.jdraft.lut;

import java.util.HashMap;
import java.util.Map;

import junit.framework.TestCase;

public class LutBuilderTest extends TestCase  {

	//this will house the Lut
	public static final Lut.String_to_int nameToAge;
	
	static { //Im assuming you want to build this statically
		Map<String,Integer> na = new HashMap<>();
		na.put("Able", 1);
		na.put("Ben", 2);
		na.put("Charles", 3);
		nameToAge = LutBuilder.runtimeStringToIntLut("internal.NameToAge", na);
	}
	
	public static void main(String[]args) {
		assertEquals(1, nameToAge.lookup("Able") );
		assertEquals(2, nameToAge.lookup("Ben") );
		assertEquals(3, nameToAge.lookup("Charles") );
		
		try {
			nameToAge.lookup("noone");
			fail("expected Exception");
		}catch(RuntimeException re) {
			
		}	
	}
}