void () { val a = 1; val b = "a2"; val c = new int[]{1}; val d = System.getProperty("sss"); // 'val' is not allowed in old-style for loops for (<error descr="'val' is not allowed in old-style for loops">val i = 0;</error> i < 10; i++) { val j = 2; } // 'val' is not compatible with array initializer expressions. Use the full form (new int[] { ... } instead of just { ... }) <error descr="'val' is not compatible with array initializer expressions. Use the full form (new int[] { ... } instead of just { ... })">val e = <error descr="Array initializer is not allowed here">{"xyz"}</error>;</error> // 'val' is not allowed with lambda expressions. <error descr="'val' is not allowed with lambda expressions.">val f = <error descr="<lambda expression> is not a functional interface">() -> "xyz"</error>;</error> // 'val' on a local variable requires an initializer expression <error descr="'val' on a local variable requires an initializer expression">val g;</error> for (val h : <error descr="Cannot resolve symbol 'Arrays'">Arrays</error>.asList("a", "b", "c")) { System.out.println(h); } }