We can’t pass thenullvalue as an argument to aswitchstatement. If we do, the program will throwNullPointerException, using our firstswitchexample: @Test(expected=NullPointerException.class) public void whenSwitchAgumentIsNull_thenNullPointerException() { String animal = null; Assert.assertEquals(...
Example: Java switch Statement // Java Program to check the size // using the switch...case statement class Main { public static void main(String[] args) { int number = 44; String size; // switch statement to check size switch (number) { case 29: size = "Small"; break; case 42...
As you become more comfortable with the basic usage of the switch statement in Java, you can start to explore some of its more advanced applications. Two such applications include nested switch statements and using switch with string variables. Let’s dive into these topics. Nested Switch Statem...
publicclassSwitchStatement{publicstaticvoidmain(String[]args){System.out.println("Monday is : "+isWeekDay(Day.TUE));System.out.println("Monday is : "+isWeekDay(Day.SUN));}publicstaticBooleanisWeekDay(Dayday){Booleanresult=switch(day){caseMON,TUE,WED,THUR,FRI->true;caseSAT,SUN->false;defa...
示例:Java switch 语句 // Java Program to check the size// using the switch...case statementclassMain{publicstaticvoidmain(String[] args){intnumber =44; String size;// switch statement to check sizeswitch(number) {case29: size ="Small";break;case42: ...
Older construct syntax is not necessarily worse or better than newer syntax if each is used for its intended purpose. This is why it is crucial to understand the specific design decisions behind using aswitchstatement or aswitchexpression to implement program logic. ...
if (xOne == 0 || xTwo == 0) { switch (i) { case 0: if (((xOne == 0 && yOne == 0) || (xTwo == 0 && yTwo == 0))) System.out.println(i + " * - - - - - - - - - - - - - - - - - - -"); break; case 1: if (((...
In the above program, we are using the for loop to print the value of i in each iteration. To know how for loop works, visit the Java for loop. Here, notice the statement, if (i == 5) { break; } This means when the value of i is equal to 5, the loop terminates. Hence we...
Assertions are great for places in the code that will never be executed, such as thedefaultcase of aswitchstatement or after a loop that never finishes 7. Conclusion The Javaassertkeyword has been available for many years but remains a little-known feature of the language. It can help remove...
1. Switch Statements 1.1. Syntax The general form of a switch statement is – switch(expression){caselabelOne:statements;break;caselabelTwo:statements;break;caselabelThree:statements;break;default:statements;} The expression value must be one of the following 6 types: ...