当代码中充斥着若干条件判断时，代码的真正意图会迷失于这些条件判断之中。这时我喜欢将条件判断提取到一个易于读取的属性或方法（如果有参数）中。重构之前的代码如下：

public class RemoteControl {
   private String[] Functions;//getter setter private String Name;//getter setter private int CreatedYear;//getter setter public String PerformCoolFunction(String buttonPressed) {
   // Determine if we are controlling some extra function         // that requires special conditions if (Functions.length > 1 && Name == "RCA" && CreatedYear > new Date().getYear() - 2) {
   return "doSomething"; } return null; } }

重构之后，代码的可读性更强，意图更明显：

public class RemoteControl {
   private String[] Functions;//getter setter private String Name;//getter setter private int CreatedYear;//getter setter private Boolean HasExtraFunctions;     public Boolean getHasExtraFunctions() {
   return Functions.length > 1 && Name == "RCA" && CreatedYear > new Date().getYear() - 2; } public String PerformCoolFunction(String buttonPressed) {
   // Determine if we are controlling some extra function         // that requires special conditions if (HasExtraFunctions) {
   return "doSomething"; } return null; } }