我有一個類擴展了View並覆蓋了onDraw(Canvas canvas)方法。該視圖運行動畫，因此onDraw將每秒調用多次。請看下面的例子... @Override
protected void onDraw(Canvas canvas) {
final int width = getWidth();
final int height = getHeight();
是否有方法使用JPA映射不可變的Value對象，如電子郵件地址？ @Immutable
@Embeddable
public final class EmailAddress {
private final String value;
public EmailAddress(String value) {
this.value = value;
}
I have a method that uses a SwingWorker. Part of the code is shown below:
public class mySocket {
public void writePacket(final String packet) {
// schedules execution on the single t
考慮從java.awt.font.TextLayout官方OpenJDK source此代碼： public final class TextLayout {
/* ... */
protected void handleJustify(float justificationWidth) {
// never called
}
}
這裏有什麼用例
在Jonathan Skeet的final variable passed to anonymous class via constructor中提到變量通過自動生成的構造函數傳遞給匿名類實例。爲什麼我無法看到在這種情況下使用反射構造： public static void main(String... args) throws InterruptedException {
final int