Refactoring conditional statements for Java Code refactoring

The reconstruction of conditional statements can be carried out in the following situations: 1. Repetitive conditional logic: If the same conditional statement is used in multiple places in the code, it can be considered to be extracted as a method or function. This can reduce the repeatability of the code and improve its readability and maintainability. //Before refactoring if (condition) { // do something // ... } //After refactoring if (hasConditionTrue()) { // do something // ... } //Move to another method or class public boolean hasConditionTrue() { return condition; } 2. Complex conditional judgment: If the conditional statement is too complex to understand and test, you can consider splitting it into multiple independent conditions or methods. This can make the code clearer, more readable, and write unit tests that are easier to test under different conditions. //Before refactoring If (condition1&&(condition2 | | condition3)&&! Condition4){ // do something // ... } //After refactoring if (isConditionTrue()) { // do something // ... } //Move to another method or class public boolean isConditionTrue() { Return condition1&&(condition2 | | condition3)&&! Condition4; } 3. A large number of nested conditions: If too many nested conditional statements result in code structure confusion, poor readability, and an increased likelihood of errors, simplification can be considered. Split complex conditional logic into multiple independent conditional judgments, and use techniques such as early return and early judgment to make the logic of the code more intuitive and concise. //Before refactoring if (condition1) { if (condition2) { if (condition3) { // do something // ... } } } //After refactoring if (!condition1) { return; } if (!condition2) { return; } if (!condition3) { return; } // do something // ... The above examples are all for the reconstruction of conditional statements to improve the readability, maintainability and Testability of the code. By extracting repetitive logic into methods or functions, breaking down complex conditional judgments, and simplifying nested conditions, the code can be made simpler, easier to understand, and modify.