JAVA

check instance of java

// instanceof Checks whether object is instance of a given class
Object obj = new String("Hello World!");
// obj is instance of String and as such first msg is printed out		
if(obj instanceof String) {
	System.out.println(obj + " is instance of String class"); // This msg is printed
} else {
	System.out.println(obj + " is not instance of String class");
}

instanceof java

@Test
public void givenWhenInstanceIsCorrect_thenReturnTrue() {
    Ring ring = new Ring();
    Assert.assertTrue(ring instanceof Round);
}