Apex - if else语句

if boolean_expression {
   /* statement(s) will execute if the boolean expression is true */
} else {
   /* statement(s) will execute if the boolean expression is false */
}

示例：

假设，我们的化工公司有两类客户：高级和正常。 根据客户类型，我们应该提供折扣和其他好处，如售后服务和支持。 下面是这个的实现。

//Execute this code in Developer Console and see the Output
String customerName = 'Glenmarkone'; //premium customer
Decimal discountRate = 0;
Boolean premiumSupport = false;
if (customerName == 'Glenmarkone') {
    discountRate = 0.1; //when condition is met this block will be executed
    premiumSupport = true;
    System.debug('Special Discount given as Customer is Premium');
}
else {
    discountRate = 0.05; //when condition is not met and customer is normal
    premiumSupport = false;
    System.debug('Special Discount Not given as Customer is not Premium');
}

由于“Glenmarkone”是一个高级客户，所以if块将基于条件执行，在其余情况下，else条件将被触发。