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else means in java

May 01, 2024 pm 05:18 PM

else is used in Java to create conditional statements that execute alternative blocks of code when the first condition is not met: Syntax: if (condition) { ... } else { ... } Working principle: The if code block is executed when the condition is true, and the else code block is executed when it is false. else is an optional code block. If there is no else and condition is false, the program continues to execute the code after the if statement block.

else means in java

else meaning in Java

else is used in Java to create conditional statements, when the first An alternative block of code is executed when the condition is not met.

Syntax

if (condition) {
    // 如果条件为真,执行的代码块
} else {
    // 如果条件为假,执行的代码块
}

Working principle

  • When the condition of the if statement is true, in the if code block code will be executed.
  • When the condition of the if statement is false, the program will jump to the else code block and execute the code in it.
  • The else code block is optional. If there is no else code block, when the condition is false, the program will continue to execute the code after the if statement block.

Example

int age = 18;

if (age >= 18) {
    System.out.println("成年了");
} else {
    System.out.println("未成年");
}

In this example, if the value of the age variable is greater than or equal to 18 years old, "Adult" is output. Otherwise, output "minor".

Note

  • else statements are always associated with the nearest if statement.
  • You can use multiple else statements to handle multiple conditions.
  • If you need to execute multiple code blocks, you can use nested if-else statements.

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