lambdaexample.java

private void test() {

        
        ArrayList<String> myArrayList = new ArrayList<>();
        
        //Non lambda code

        for (String s : myArrayList) {

            switch (s) {
                case "x":
                    System.out.println("do something");
                    break;
                case "y":
                    System.out.println("do something else");
                    break;
                case "z":
                    System.out.println("do something else");
                    break;
            }
        }
        
        //The statement above is equivalent to the lambda code below

        myArrayList.forEach(item -> {
            
            //applies to everything in loop
            item.concat("add something");
            
            if (item.equals("x")) {
                System.out.println("do something");
            }
            if (item.equals("y")) {
                System.out.println("do something else ");
            }
            if (item.equals("z")) {
                System.out.println("do something else again");
            }
        });


    }