J2SE 5.0的static import
2008-01-05 08:58:49 来源:WEB开发网核心提示:import static java.lang.System.err;import static java.lang.System.out;import java.io.IOException;import java.io.PRintStream;public class StaticImporter {public
import static java.lang.System.err;
import static java.lang.System.out;
import java.io.IOException;
import java.io.PRintStream;
public class StaticImporter {
public static void writeError(PrintStream err, String msg)
throws IOException {
// Note that err in the parameter list overshadows the imported err
err.println(msg);
}
public static void main(String[] args) {
out.println("Good morning, " + "java2s");
out.println("Have a day!");
try {
writeError(System.out, "Error occurred.");
} catch (IOException e) { e.printStackTrace();
}
}
}
import static java.lang.System.out;
import java.io.IOException;
import java.io.PRintStream;
public class StaticImporter {
public static void writeError(PrintStream err, String msg)
throws IOException {
// Note that err in the parameter list overshadows the imported err
err.println(msg);
}
public static void main(String[] args) {
out.println("Good morning, " + "java2s");
out.println("Have a day!");
try {
writeError(System.out, "Error occurred.");
} catch (IOException e) { e.printStackTrace();
}
}
}
[]
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