I have read check documentation: https://checkstyle.org/checks/misc/indentation.html
I have downloaded the latest checkstyle from: https://checkstyle.org/cmdline.html#Download_and_Run
I have executed the cli and showed it below, as cli describes the problem better than 1,000 words
From: https://google.github.io/styleguide/javaguide.html#s4.8.4-switch
In a new-style switch, a switch rule can be written on a single line if it otherwise follows Google style. (It must not exceed the column limit, and if it contains a non-empty block then there must be a line break after {.)
Code:
/** some javadoc. */
public class Test {
void testMethod1(int month) {
int result =
switch (month) {
case 1, 6, 7 -> {
System.out.println("try");
yield 1;
}
case 2, 9, 10, 11, 12 -> { yield 2; } // Expected violation
case 3, 5, 4, 8 -> { yield month * 4; } // Expected violation
default -> 0;
};
}
void testMethod2(int number) {
switch (number) {
case 0, 1 -> System.out.println("0");
case 2 ->
handleTwoWithAnExtremelyLongMethodCallThatWouldNotFitOnTheSameLine();
default -> { handleSurprisingNumber(number); } // Expected violation
}
}
private void handleSurprisingNumber(int number) {
number++;
}
private int handleTwoWithAnExtremelyLongMethodCallThatWouldNotFitOnTheSameLine() {
return 0;
}
}Cli:
$ java -jar checkstyle-10.26.1-all.jar -c google_checks.xml Test.java
Starting audit...
Audit done.
Formatter:
$ java -jar google-java-format-1.27.0-all-deps.jar Test.java > FormattedCode.java
$ diff -Naru Test.java FormattedCode.java
--- Test.java 2025-08-06 15:15:12.435365500 +0530
+++ FormattedCode.java 2025-08-06 15:15:41.022134100 +0530
@@ -8,8 +8,12 @@
System.out.println("try");
yield 1;
}
- case 2, 9, 10, 11, 12 -> { yield 2; }
- case 3, 5, 4, 8 -> { yield month * 4; }
+ case 2, 9, 10, 11, 12 -> {
+ yield 2;
+ }
+ case 3, 5, 4, 8 -> {
+ yield month * 4;
+ }
default -> 0;
};
}
@@ -17,9 +21,10 @@
void testMethod2(int number) {
switch (number) {
case 0, 1 -> System.out.println("0");
- case 2 ->
- handleTwoWithAnExtremelyLongMethodCallThatWouldNotFitOnTheSameLine();
- default -> { handleSurprisingNumber(number); }
+ case 2 -> handleTwoWithAnExtremelyLongMethodCallThatWouldNotFitOnTheSameLine();
+ default -> {
+ handleSurprisingNumber(number);
+ }
}
}
I have read check documentation: https://checkstyle.org/checks/misc/indentation.html
I have downloaded the latest checkstyle from: https://checkstyle.org/cmdline.html#Download_and_Run
I have executed the cli and showed it below, as cli describes the problem better than 1,000 words
From: https://google.github.io/styleguide/javaguide.html#s4.8.4-switch
Code:
Cli:
Formatter: