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unchecked warning explanation (IDEA-126457)

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Anna Kozlova
2015-03-16 13:34:32 +01:00
parent 83e429cd8f
commit 6ad1810157
4 changed files with 78 additions and 16 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/UncheckedExtendedWarnings.java
+29
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@@ -0,0 +1,29 @@
import java.util.Iterator;
import java.util.List;
class A<<warning descr="Type parameter 'T' is never used">T</warning>> {
List<String> getList() {
return null;
}
}
public class DefaultEventSource<<warning descr="Type parameter 'T' is never used">T</warning>> extends A {
public Iterator<String> getKeys(){
return null;
}
@Override
List<String> getList() {
return <warning descr="Unchecked assignment: 'java.util.List' to 'java.util.List<java.lang.String>'. Reason: 'super' has raw type, so result of getList is erased">super.getList()</warning>;
}
void f(DefaultEventSource source){
final Iterator<String> <warning descr="Variable 'keys' is never used">keys</warning> = <warning descr="Unchecked assignment: 'java.util.Iterator' to 'java.util.Iterator<java.lang.String>'. Reason: 'source' has raw type, so result of getKeys is erased">source. getKeys()</warning>;
final Iterator<String> <warning descr="Variable 'keys1' is never used">keys1</warning> = <warning descr="Unchecked cast: 'java.util.Iterator' to 'java.util.Iterator<java.lang.String>'. Reason: 'source' has raw type, so result of getKeys is erased">(Iterator<String>)source.getKeys()</warning>;
final Iterator<String> <warning descr="Variable 'keys2' is assigned but never accessed">keys2</warning>;
keys2 = <warning descr="Unchecked assignment: 'java.util.Iterator' to 'java.util.Iterator<java.lang.String>'. Reason: 'source' has raw type, so result of getKeys is erased">source.getKeys()</warning>;
for (<error descr="Incompatible types. Found: 'java.lang.Object', required: 'java.lang.String'">String <warning descr="Parameter 'o' is never used">o</warning> : super.getList()</error>) {}
}
}