FunctionInterfaceTest.java

package study.java.jdks.version1_8.function_interface;

public class FunctionInterfaceTest {
	public static void main(String[] args) {
		Converter<String,Integer> converter = (from) -> { int a =Integer.valueOf(from);return a+1;};
		Integer converted = converter.convert("123");
		System.out.println(converted + 3);
	}

}