这样强制转换编译会提示Unchecked cast: 'java.lang.Object' to 'java.util.List<java.lang.String>'...
Unchecked cast:'java.lang.Object'to'java.util.List<java.lang.String>'less...(Ctrl+F1)Signals places where an unchecked warning is issued by the compiler,forexample:voidf(HashMap map){map.put("key","value");}Hint:Pass-Xlint:unchecked to javac togetmore details. 3、问题的解决 在很多博客...
if (clazz.isAssignableFrom(Contract.class)) { // Warning: java: unchecked cast // required: java.util.ArrayList<T> // found: java.util.ArrayList<Contract> return (ArrayList<T>) getPaginatedContracts(startRow, pageSize); } else if (clazz.isAssignableFrom(Job.class)) { // Warning: java:...
javac -X-Xlint Enable recommended warnings//启用建议的警告-Xlint:{all,cast,classfile,deprecation,dep-ann,divzero,empty,fallthrough,finally,options,overrides,path,processing,rawtypes,serial,static,try,unchecked,varargs,-cast,-classfile,-deprecation,-dep-ann, -divzero,-empty,-fallthrough,-finally,-o...
Unchecked cast: 'java.lang.Object' to 'java.util.List<java.lang.String>' less... (Ctrl+F1) Signals places where an unchecked warning is issued by the compiler, for example: void f(HashMap map) { map.put("key", "value");
一:方法上添加@SuppressWarnings("unchecked") 二:Eclipse的Window --> Preferences --> Java- --> Compiler --> Errors/Warning --> Generic types中Unchecked generic type operation设置为Ignore。 三:Eclipse的Window --> Preferences --> Java --> Compiler将Compiler compliance level设置为小于1.5...
这也就是为什么上面会报错的原因了,setData((Integer) data);的时候String无法转换成Integer。所以上面第2行编译器提示unchecked warning的时候,我们不能选择忽略,不然要等到运行期间才能发现异常。如果我们一开始加上Node<Integer> n = mn就好了,这样编译器就可以提前帮我们发现错误。
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unchecked Java 言語仕様で指定されている未検査変換警告の詳細を示します。たとえば、 List l = new ArrayList<Number>(); List<String> ls = l; // unchecked warning 型の消去中に、型 ArrayList<Number> および List<String> はそれぞれ ArrayList および List になります。変数ls にはパラ...
As well as the use of raw types (as described by the other answers), an unchecked cast can also cause the warning. Once you've compiled with -Xlint, you should be able to rework your code to avoid the warning. This is not always possible, particularly if you are integrating with legac...