javacjavac, reads
source files written in the Java programming language, and compiles
them into bytecode class files. Optionally, the compiler can also
process annotations found in source and class files using the
Pluggable Annotation Processing API. The compiler is a command line
tool but can also be invoked using the Java Compiler API. The
compiler accepts source code defined by the Java Language
Specification (JLS) and produces class files defined by the Java
Virtual Machine Specification (JVMS).
This lists the APIs introduced in the javac
tool:
Area: Compiler
Synopsis: The Java 7 compiler used to erroneously
accept the diamond operator in array initializer expressions. For
example, the following code, which was previously accepted, is now
rightly rejected:
class Foo<X> {}
class Test {
Foo<String>[] fooArr = new Foo<>[]{ }; //error
}
See 7057297.
Area: Compiler
Synopsis: The Java 7 compiler erroneously accepted
the following program due to a bug in the most specific algorithm
implementation:
import java.util.*;
interface A {List<Number> getList();}
interface B {ArrayList getList();}
interface AB extends A, B {}
class Test {
void test(AB ab) {
Number n = ab.getList().get(1);
}
}
This program used to fail in JDK 6. A fix has been provided in Java SE 7u2 to rightly reject this program. See 7062745.
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