![]() ![]() ![]() The switch is passed a variable, the value of which is compared with each case value. ![]() Note: Switch statements are an efficient alternative for if-else statements. The switch Statement of the Java Language Specification. In Java, a switch statement is used to transfer control to a particular block of code, based on the value of the variable being tested. Each case label must hold a different value. A switch statement can contain multiple case labels. Im not saying simplification is the only use for switches though. It makes using switches to simplify code pointless since you always have to do a null check. However, it is good to be aware that this method does neither do full case folding nor decomposition and so cannot perform caseless matching as specified in the Unicode standard. Just a reminder: while the most suggested case is the best solution, note that if you dont close with a brake your case:, it will continue executing in the next case. If there is no match, the code of the default case is executed. Similarly, the code of case value2 is executed if expression matches with value2. If expression matches with value1, the code of case value1 are executed. It contains a block of code which is executed only when the switch value matches with the case. Im not understanding why a short circuit of null being mapped to the 'default' case or a special case for a null switch was not implemented for Strings. String.equalsIgnoreCase is the most practical choice for naive case-insensitive string comparison. How does the switch-case statement work The expression is evaluated once and compared with the values of each case. It's possible to group several conditions in the same case statement using the mechanism of fall through allowed by switch statements, it's mentioned in the Java tutorial and fully specified in section ยง14.11. The Java case keyword is a conditional label which is used with the switch statement. ![]()
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