私の現在のプロジェクトでは、コード ビルドに jdk1.6.0_32、apache-ant-1.7.1、および CVS を使用しています。
現在、jdk1.7.0_79 に移行しています。そのため、JAVA_HOME と、コードのビルドに使用されるプロパティ ファイルを変更しました。
この後、コードのビルドを実行しようとすると、次のエラーが発生しました。
[javac] warning: java\util\HashMap.class(java\util:HashMap.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\lang\Object.class(java\lang:Object.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\lang\String.class(java\lang:String.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\io\Serializable.class(java\io:Serializable.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\util\ArrayList.class(java\util:ArrayList.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\util\Iterator.class(java\util:Iterator.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\util\Set.class(java\util:Set.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\util\List.class(java\util:List.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\util\Date.class(java\util:Date.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\net\InetAddress.class(java\net:InetAddress.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\sql\Connection.class(java\sql:Connection.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\sql\PreparedStatement.class(java\sql:PreparedStatement.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\sql\ResultSet.class(java\sql:ResultSet.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] It is recommended that the compiler be upgraded.
[javac] warning: java\sql\ResultSetMetaData.class(java\sql:ResultSetMetaData.class): major version 51 is newer than 50, the highest major version supported by this compiler.
[javac] コンパイラをアップグレードすることをお勧めします。
誰でもこの問題を解決するのを手伝ってくれますか?