ApexSpeedExperiment_3.cls

/*
    Speed Test - Which One is Fast to Compare String from ==, equals and equalsIgnoreCase
    Author: 0to1Code.Com
*/
public class ApexSpeedExperiment_3{
    
    //Experiment 1 : Using ==
    public static void runExperiment1(){
        
        system.debug('CPU Limit Consumption Start: '+Limits.getCPUtime());
        
        for(Integer i=0; i<50000 ;i++){
            if( 'Test'=='Test' ){}
        }
                    
        system.debug('CPU Limit Consumption End: '+Limits.getCPUtime());
    }
    
    //Experiment 2 : Using equals method
    public static void runExperiment2(){
        
        system.debug('CPU Limit Consumption Start: '+Limits.getCPUtime());
        
        for(Integer i=0; i<50000 ;i++){
            if( 'Test'.equals('Test') ){}
        }
                    
        system.debug('CPU Limit Consumption End: '+Limits.getCPUtime());
    }
    
    //Experiment 3 : Using equalsIgnoreCase method
    public static void runExperiment3(){
        
        system.debug('CPU Limit Consumption Start: '+Limits.getCPUtime());
        
        for(Integer i=0; i<50000 ;i++){
            if( 'Test'.equalsIgnoreCase('Test') ){}  
        }
                    
        system.debug('CPU Limit Consumption End: '+Limits.getCPUtime());
    }   
}