Java & Groovy bytecode perf

bytecodeperf.groovy

@Test
       public void performances_are_as_expected() {
            
             long start, end;
            
             def varsMap = {
                    start = System.currentTimeMillis()
                    def map =["${T11Tag.COUNTRY}": null, "${T11Tag.DATE_GZT}" : null, "${T11Tag.DOCNUM}" : null, "${T11Tag.F_OR_P}": null,
                           "${T11Tag.IPR_TYPE}": null, "${T11Tag.KIND}": null, "${T11Tag.LEC1}": null, "${T11Tag.LEC2}": null, "${T11Tag.STATUS}": null];
                    for (int i = 0; i < 100000; i++) {
                           for(T11Tag tag : T11Tag.values()) {
                                  map.put("${tag}", "0")
                           }
                    }
                    end = System.currentTimeMillis()
                    end-start
             }
            
             def perfVarsmap = varsMap()
            
             def groovyVars = {
                    start = System.currentTimeMillis()
                    def country, dategzt, docnum, forp, iprt, kind, lec1, lec2, status
                    for (int i = 0; i < 100000; i++) {
                           country = "${i*System.currentTimeMillis()}"
                           dategzt = "${i*System.currentTimeMillis()}"
                           docnum = "${i*System.currentTimeMillis()}"
                           forp = "${i*System.currentTimeMillis()}"
                           iprt = "${i*System.currentTimeMillis()}"
                           kind = "${i*System.currentTimeMillis()}"
                           lec1 = "${i*System.currentTimeMillis()}"
                           lec2 = "${i*System.currentTimeMillis()}"
                           status = "${i*System.currentTimeMillis()}"
                           country = null
                           dategzt = null
                           docnum = null
                           forp = null
                           iprt = null
                           kind = null
                           lec1 = null
                           lec2 = null
                           status = null
                    }
                    end = System.currentTimeMillis()
                    end-start
             }
            
             def perfVarsgroovy = groovyVars()
            
             def groovyVarsReassign = {
                    start = System.currentTimeMillis()
                   
                    for (int i = 0; i < 100000; i++) {
                           def country = null, dategzt = null, docnum = null, forp = null, iprt = null, kind = null, lec1 = null, lec2 = null, status = null
                           country = "${i*System.currentTimeMillis()}"
                           dategzt = "${i*System.currentTimeMillis()}"
                           docnum = "${i*System.currentTimeMillis()}"
                           forp = "${i*System.currentTimeMillis()}"
                           iprt = "${i*System.currentTimeMillis()}"
                           kind = "${i*System.currentTimeMillis()}"
                           lec1 = "${i*System.currentTimeMillis()}"
                           lec2 = "${i*System.currentTimeMillis()}"
                           status = "${i*System.currentTimeMillis()}"
                    }
                   
                    end = System.currentTimeMillis()
                    end-start
             }
            
             def perfVarsreassigngroovy = groovyVarsReassign()
            
             def varsJava = {
                    start = System.nanoTime();
                    String country, dategzt, docnum, forp, iprt, kind, lec1, lec2, status;
                    for (int i = 0; i < 100000; i++) {
                           country = String.valueOf(i*System.nanoTime());
                           dategzt = String.valueOf(i*System.nanoTime());
                           docnum = String.valueOf(i*System.nanoTime());
                           forp = String.valueOf(i*System.nanoTime());
                           iprt = String.valueOf(i*System.nanoTime());
                           kind = String.valueOf(i*System.nanoTime());
                           lec1 = String.valueOf(i*System.nanoTime());
                           lec2 = String.valueOf(i*System.nanoTime());
                           status = String.valueOf(i*System.nanoTime());
                           country = null;
                           dategzt = null;
                           docnum = null;
                           forp = null;
                           iprt = null;
                           kind = null;
                           lec1 = null;
                           lec2 = null;
                           status = null;
                    }
                    end = System.nanoTime();
                    end-start
             }
            
             def perfVarsJava = varsJava()
            
             def varsReassignJava = {
                    start = System.nanoTime();
                   
                    for (int i = 0; i < 100000; i++) {
                           String country = null, dategzt = null, docnum = null, forp = null, iprt = null, kind = null, lec1 = null, lec2 = null, status = null;
                           country = String.valueOf(i*System.nanoTime());
                           dategzt = String.valueOf(i*System.nanoTime());
                           docnum = String.valueOf(i*System.nanoTime());
                           forp = String.valueOf(i*System.nanoTime());
                           iprt = String.valueOf(i*System.nanoTime());
                           kind = String.valueOf(i*System.nanoTime());
                           lec1 = String.valueOf(i*System.nanoTime());
                           lec2 = String.valueOf(i*System.nanoTime());
                           status = String.valueOf(i*System.nanoTime());
                    }
                    end = System.nanoTime();
                    end - start
             }
            
             def perfVarsReassignJava = varsReassignJava()
            
             def varsArray = {
                    start = System.currentTimeMillis()
                    def array = []
                    for (int i = 0; i < 100000; i++) {
                           for(int j = 0; j < 10; j++) {
                                  array[j] = "0"
                           }
                           array.each { v ->
                                  v = null
                           }
                    }
                    end = System.currentTimeMillis()
                    end - start
             }
            
             def perfVarsArray = varsArray()
             Assert.assertTrue(perfVarsreassigngroovy < perfVarsgroovy)
             Assert.assertTrue(perfVarsgroovy  < perfVarsArray)
             Assert.assertTrue(perfVarsArray < perfVarsmap)
             Assert.assertTrue(perfVarsmap < perfVarsJava)
       }