Matching

Streams APIs provide multiple terminal methods to match a predicate against the elements of the stream:

• All element match the predicate: For validating if all the elements match the predicate, the allMatch() method is used. If all the elements match the predicate only then will the result be a Boolean true:

boolean matchesAll =streamSupplier.get().allMatch(x->x.toString().length() > 1);
System.out.println("All the elemetns have lenght greater than 1 ::"+matchesAll);

• No elements match the predicate: If none of the elements match the predicate condition, the noneMatch() method returns the Boolean value true or else it is false:

boolean noneMatches =streamSupplier.get().noneMatch(x->x.toString().length() > 1);
System.out.println("None of the elemetns have lenght greater than 1 ::"+noneMatches);

• Any element matches the predicate: This is a special matching function as it short circuits the result, that is, the moment an element matches the predicate, the anyMatch() method returns a true and exits the operation:

boolean anyMatches =streamSupplier.get().peek(x->System.out.println("Element being iterated is :: "+x)).anyMatch(x->x.toString().length() == 2);
System.out.println("The short circuit terminal operation finished with return value :: "+anyMatches);