how to set the parameters required and optional in end endpoint in java 8 code example
Example 1: java how to make a parameter optional
void foo(String a, Optional<Integer> bOpt) {
Integer b = bOpt.isPresent() ? bOpt.get() : 0;
}
foo("a", Optional.of(2));
foo("a", Optional.<Integer>absent());
Example 2: java how to make a parameter optional
void foo(String a, Object... b) {
Integer b1 = 0;
String b2 = "";
if (b.length > 0) {
if (!(b[0] instanceof Integer)) {
throw new IllegalArgumentException("...");
}
b1 = (Integer)b[0];
}
if (b.length > 1) {
if (!(b[1] instanceof String)) {
throw new IllegalArgumentException("...");
}
b2 = (String)b[1];
}
}
foo("a");
foo("a", 1);
foo("a", 1, "b2");