package java.lang;

import java.io.PrintStream;
import java.io.InputStream;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileDescriptor;

public abstract class System {
  static {
    loadLibrary("natives");
  }

  public static final PrintStream out = new PrintStream
    (new BufferedOutputStream(new FileOutputStream(FileDescriptor.out)), true);

  public static final PrintStream err = new PrintStream
    (new BufferedOutputStream(new FileOutputStream(FileDescriptor.err)), true);

  public static final InputStream in
    = new BufferedInputStream(new FileInputStream(FileDescriptor.in));

  public static native void arraycopy(Object src, int srcOffset, Object dst,
                                      int dstOffset, int length);

  public static native String getProperty(String name);

  public static native long currentTimeMillis();

  public static void loadLibrary(String name) {
    Runtime.getRuntime().loadLibrary(name);
  }

  public static void gc() {
    Runtime.getRuntime().gc();
  }

  public static void exit(int code) {
    Runtime.getRuntime().exit(code);
  }
}