public void invalid_if_use_array_initializer() { int[] numbers = {1, 2, 3}; var names = {"a", "b", "c"}; // compile error: Array initializer is not allowed here } 推荐实践 使用var 既可以编写出清晰的代码,也可以编写出混乱的代码,这些都取决于使用者如何使用。 JDK 的开发者 Stuar...
2,3};varnames={"a","b","c"};// compile error: Array initializer is not allowed here} ...
//int[] nums; nums = {1,2,3,4}; 这样写会出现array initializer is not allowed here //多维数组 int[][] matrix = {{1,3,4},{2,3,4},{3,4,5},{3,3,4}}; //打印二维数组 System.out.println("==="); for(int i = 0; i < matrix.length; i ++){ for(int j = 0; j ...
AI代码解释 publicObjectfetchTransferableData(String data)throws UnsupportedFlavorException,IOException{varstringSelection=newStringSelection(data);vardataFlavorsArray=stringSelection.getTransferDataFlavors();varobj=stringSelection.getTransferData(dataFlavorsArray[0]);returnobj;} 然而,可读性问题也是由这样一个事实引...
but cast is required } 另外针对instanceof示例如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 byte b = 42; b instanceof int; // true (unconditionally exact) int i = 42; i instanceof byte; // true (exact) int i = 1000; i instanceof byte; // false (not exact) int i =...
(variable initializer is 'null') 1 error 1. 2. 3. 4. 5. 6. 不能有额外的数组维度括号 var actorArr[] = new Actor[10]; LocalTypeInference.java:52: error: 'var' is not allowed as an element type of an array var actorArr[] = new Actor[10]; ...
// initializer is not allowed here because this property has not backing field val MutableList<Int>.sumIsEven: Boolean = false get() = this.sum() % 2 == 0 1. 2. 3. 为什么不能编译通过?其实,这与扩展函数一样,其本质也是对应java中的静态方法。由于扩展没有实际地将成员插入类中,因此对扩展...
java.debug.settings.exceptionBreakpoint.allowClasses: Specifies the allowed locations where the exception breakpoint can break on. Wildcard is supported, e.g.java.*,*.Foo. java.debug.settings.exceptionBreakpoint.skipClasses: Skip the specified classes when breaking on exception. ...
What is JSR 133 about? Since 1997,several serious flaws have been discovered in the Java Memory Model as definedin Chapter 17 of the Java Language Specification. These flaws allowed forconfusing behaviors (such as final fields being observed to change their value)and undermined the compiler's ab...
Here is a summary of the correspondence between these factory methods and the behavior the resulting method handles: "equiv">lookup expression member bytecode behavior java.lang.invoke.MethodHandles.Lookup#findGetter lookup.findGetter(C.class,"f",FT.class) FT f;(T) this.f; java.lang...