Suspicious ternary operator in varargs method call

Reports vararg method calls that use a ternary operator with mixed array and non-array branches.

When compiled, both branches are wrapped in arrays. As a result, the array branch is turned into a two-dimensional array, which may indicate a problem.

The quick-fix wraps the non-array branch in an array to prevent the compiler from doing the conversion.

Locating this inspection

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SuspiciousTernaryOperatorInVarargsCall

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Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Probable bugs

Example:

    static void bar(boolean flag) {
        Object[] a = {1, 2};
        Object b = "hello";
        foo(flag ? a : b);
    }
    static void foo(Object... obj) {
    }

After the quick-fix:

    static void bar(boolean flag) {
        Object[] a = {1, 2};
        Object b = "hello";
        foo(flag ? a : new Object[]{b});
    }
    static void foo(Object... obj) {
    }

This inspection depends on the Java feature 'Variable arity methods', which is available since Java 5.

New in 2020.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024