org.objectweb.asm.Label类的使用及代码示例

x33g5p2x  于2022-01-23 转载在 其他  
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本文整理了Java中org.objectweb.asm.Label类的一些代码示例，展示了Label类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Label类的具体详情如下：
包路径：org.objectweb.asm.Label
类名称：Label

Label介绍

[英]A position in the bytecode of a method. Labels are used for jump, goto, and switch instructions, and for try catch blocks. A label designates the instruction that is just after. Note however that there can be other elements between a label and the instruction it designates (such as other labels, stack map frames, line numbers, etc.).
[中]方法字节码中的位置。标签用于跳转、转到和切换指令，以及try-catch块。标签指定紧跟其后的指令。但是请注意，标签与其指定的指令之间可能存在其他元素（如其他标签、堆栈映射框、行号等）。

代码示例

代码示例来源：origin: scouter-project/scouter

@Override
public void visitMaxs(int maxStack, int maxLocals) {
  Label endFinally = new Label();
  mv.visitTryCatchBlock(startFinally, endFinally, endFinally, null);
  mv.visitLabel(endFinally);
  mv.visitInsn(DUP);
  int errIdx = newLocal(Type.getType(Throwable.class));
  mv.visitVarInsn(Opcodes.ASTORE, errIdx);
  mv.visitVarInsn(Opcodes.ALOAD, statIdx);
  mv.visitVarInsn(Opcodes.ALOAD, errIdx);
  mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE_MAIN, END_METHOD, END_SIGNATURE, false);
  mv.visitInsn(ATHROW);
  mv.visitMaxs(maxStack + 8, maxLocals + 2);
}

代码示例来源：origin: org.ow2.asm/asm

@Override
public void visitTableSwitchInsn(
  final int min, final int max, final Label dflt, final Label... labels) {
 lastBytecodeOffset = code.length;
 // Add the instruction to the bytecode of the method.
 code.putByte(Opcodes.TABLESWITCH).putByteArray(null, 0, (4 - code.length % 4) % 4);
 dflt.put(code, lastBytecodeOffset, true);
 code.putInt(min).putInt(max);
 for (Label label : labels) {
  label.put(code, lastBytecodeOffset, true);
 }
 // If needed, update the maximum stack size and number of locals, and stack map frames.
 visitSwitchInsn(dflt, labels);
}

代码示例来源：origin: org.ow2.asm/asm

/**
 * Ends the current basic block. This method must be used in the case where the current basic
 * block does not have any successor.
 *
 * <p>WARNING: this method must be called after the currently visited instruction has been put in
 * {@link #code} (if frames are computed, this method inserts a new Label to start a new basic
 * block after the current instruction).
 */
private void endCurrentBasicBlockWithNoSuccessor() {
 if (compute == COMPUTE_ALL_FRAMES) {
  Label nextBasicBlock = new Label();
  nextBasicBlock.frame = new Frame(nextBasicBlock);
  nextBasicBlock.resolve(code.data, code.length);
  lastBasicBlock.nextBasicBlock = nextBasicBlock;
  lastBasicBlock = nextBasicBlock;
  currentBasicBlock = null;
 } else if (compute == COMPUTE_MAX_STACK_AND_LOCAL) {
  currentBasicBlock.outputStackMax = (short) maxRelativeStackSize;
  currentBasicBlock = null;
 }
}

代码示例来源：origin: stackoverflow.com

Button incBtn = new Button("Increment");
Label label = new Label("0");

EventStreams.eventsOf(incBtn, ACTION)
    .accumulate(0, (n, a) -> n + 1)
    .map(Object::toString)
    .feedTo(label.textProperty());

代码示例来源：origin: stackoverflow.com

private int counter = 0; // mutable field!!!

Button incBtn = new Button("Increment");
Label label = new Label("0");

incBtn.addEventHandler(ACTION, a -> {
  label.setText(Integer.toString(++counter)); // side-effect!!!
});

代码示例来源：origin: stackoverflow.com

stage.setTitle("Table View Sample");
stage.setWidth(450);
stage.setHeight(500);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
vbox.getChildren().addAll(label, table);
stage.setScene(new Scene(new Group(vbox)));
stage.show();

代码示例来源：origin: stackoverflow.com

primaryStage.setTitle("Extension Filter Example");
final Label fileLabel = new Label();
Button btn = new Button("Open FileChooser");
btn.setOnAction(new EventHandler<ActionEvent>() {
      fileLabel.setText(file.getPath());
VBox vBox = new VBox(30);
vBox.getChildren().addAll(fileLabel, btn);
vBox.setAlignment(Pos.BASELINE_CENTER);
primaryStage.setScene(new Scene(root, 300, 250));
primaryStage.show();

代码示例来源：origin: stackoverflow.com

public void start(Stage primaryStage) {
  final AtomicLong counter = new AtomicLong(-1);
  final Label label = new Label();
  final Thread countThread = new Thread(new Runnable() {
    @Override
  countThread.start();
  VBox root = new VBox();
  root.getChildren().add(label);
  root.setPadding(new Insets(5));
  root.setAlignment(Pos.CENTER);
  primaryStage.setScene(scene);
  primaryStage.show();

代码示例来源：origin: stackoverflow.com

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class PickingDates extends Application {
  @Override
  public void start(final Stage stage) throws Exception {
    DatePicker picker = new DatePicker();
    Label typedData = new Label();
    picker.getEditor().textProperty().addListener((observable, oldValue, newValue) -> {
      typedData.setText(newValue);
    });
    Button button = new Button("Button");

    final VBox layout = new VBox(10, typedData, picker, button);
    layout.setPadding(new Insets(10));
    Scene scene = new Scene(layout);
    stage.setScene(scene);
    stage.show();
  }

  public static void main(String[] args) {
    launch(args);
  }
}

代码示例来源：origin: stackoverflow.com

stage.setTitle("Table View Sample");
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
final Label actionTaken = new Label();
  return new TableCell<Person, Person>() {
   final ImageView buttonGraphic = new ImageView();
   final Button button = new Button(); {
    button.setGraphic(buttonGraphic);
    button.setMinWidth(130);
     button.setOnAction(new EventHandler<ActionEvent>() {
      @Override public void handle(ActionEvent event) {
       actionTaken.setText("Bought " + person.getLikes().toLowerCase() + " for: " + person.getFirstName() + " " + person.getLastName());
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol, btnCol);
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 10, 10, 10));
vbox.getChildren().addAll(label, table, actionTaken);
VBox.setVgrow(table, Priority.ALWAYS);
stage.setScene(new Scene(vbox));
stage.show();

代码示例来源：origin: stackoverflow.com

stage.setTitle("Validation Demo");
BorderPane borderPane = new BorderPane();
scene.getStylesheets().add(
    ValidationDemo.class.getResource("context.css")
        .toExternalForm());
stage.setScene(scene);
stage.show();
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(25, 25, 25, 25));
grid.add(scenetitle, 0, 0, 2, 1);
Label userName = new Label("User Name:");
grid.add(userName, 0, 1);
grid.add(userTextField, 1, 1);
Label pw = new Label("Password:");
grid.add(pw, 0, 2);
grid.add(pwBox, 1, 2);
btn.setOnAction(new EventHandler<ActionEvent>() {

代码示例来源：origin: stackoverflow.com

Keyboard keyboard = new Keyboard();
scene.getStylesheets().add(
    getClass().getResource(
        "keyboard.css"
);
stage.setScene(scene);
stage.show();
fontSize.setMinorTickCount(0);
Label typedData = new Label();
keyboard.lastKeyTextProperty().addListener((observable, oldText, newText) ->
    typedData.setText(typedData.getText() + newText)
);
VBox layout = new VBox(10);
layout.getChildren().setAll(
    new Label("Keyboard Size"),
    fontSize,
    typedData
    HBox keyRow = new HBox();
    keyRow.getStyleClass().add("key-row");

代码示例来源：origin: stackoverflow.com

public void start(Stage primaryStage) {
  HBox hbox = new HBox(10);
  TextField field = new TextField();
  HBox.setHgrow(field, Priority.ALWAYS);
  hbox.setAlignment(Pos.BASELINE_LEFT);
  hbox.getChildren().addAll(
    new Label("Search:"), field, new Button("Go")
  );
  hbox.setPadding(new Insets(10));

  Scene scene = new Scene(hbox, 600, 250, Color.WHITE);
  primaryStage.setScene(scene);
  primaryStage.show();
}

代码示例来源：origin: stackoverflow.com

Button btn = new Button();
btn.setText("Choose favorite meal");
Label label = new Label("I don't know your favorite meal yet!");
btn.setOnAction((ActionEvent event) -> {
  FXMLLoader loader = new FXMLLoader(getClass().getResource("input.fxml"));
  Scene newScene;
  Stage inputStage = new Stage();
  inputStage.initOwner(primaryStage);
  inputStage.setScene(newScene);
  inputStage.showAndWait();
  label.setText(meal == null ? "C'mon, tell me your favourite meal already!" : "Your favourite meal is "+meal+". Interesting!");
});
root.setSpacing(10);
root.setPadding(new Insets(10));
root.setPrefWidth(300);

代码示例来源：origin: stackoverflow.com

final Label lblTool = new Label();
HBox hBox = new HBox();
hBox.setSpacing(5.0);
hBox.setPadding(new Insets(5, 5, 5, 5));
hBox.getChildren().add(lblTool);
    lblTool.setText(newValue.getTool());
pane.setTop(hBox);
pane.setCenter(table);
stage.setScene(new Scene(pane, 640, 480));
stage.show();

代码示例来源：origin: stackoverflow.com

@Override
public void start(Stage primaryStage) {

  HBox hbox = new HBox();

  Button b = new Button("add");
  b.setOnAction(ev -> hbox.getChildren().add(new Label("Test")));

  ScrollPane scrollPane = new ScrollPane(hbox);
  scrollPane.setFitToHeight(true);

  BorderPane root = new BorderPane(scrollPane);
  root.setPadding(new Insets(15));
  root.setTop(b);

  Scene scene = new Scene(root, 400, 400);
  primaryStage.setScene(scene);
  primaryStage.show();
}

代码示例来源：origin: stackoverflow.com

Scene scene = new Scene(root, 400, 400);            
primaryStage.setScene(scene);
primaryStage.setResizable(false);
StackPane waitingPane = new StackPane();
final ProgressBar progress = new ProgressBar();
Label load = new Label("loading things...");
progress.setTranslateY(-25);
load.setTranslateY(25);
waitingPane.getChildren().addAll(new Rectangle(400,400,Color.WHITE),load,progress);
root.getChildren().add(waitingPane);
primaryStage.show();
loadPane = new TilePane(5,5);
loadPane.setPrefColumns(3);
loadPane.setPadding(new Insets(5));
for(int i=0;i<9;i++){
  StackPane waitingPane = new StackPane();
  indicators[i].setTranslateY(-25);
  indicators[i].setTranslateX(-10);
  loading[i] = new Label();
  loading[i].setTranslateY(25);
  waitingPane.getChildren().addAll(background,indicators[i],loading[i]);

代码示例来源：origin: stackoverflow.com

Label menuLabel = new Label("File");
 // menuLabel.setStyle("-fx-background-color: yellow; -fx-padding: 0px;");
 menuLabel.setOnMouseClicked(new EventHandler<MouseEvent>() {
   @Override
   public void handle(MouseEvent event) {
     System.out.println("File menu clicked");
     Stage myDialog = new Stage();
      myDialog.initModality(Modality.WINDOW_MODAL);
      Scene myDialogScene = new Scene(VBoxBuilder.create()
          .children(new Text("Hello! it's My Dialog."))
          .alignment(Pos.CENTER)
          .padding(new Insets(10))
          .build());
      myDialog.setScene(myDialogScene);
      myDialog.show();
   }
 });
 Menu fileMenuButton = new Menu();
 fileMenuButton.setGraphic(menuLabel);
 menuBar.getMenus().add(fileMenuButton);

代码示例来源：origin: stackoverflow.com

public void start(Stage primaryStage) {
  BorderPane root = new BorderPane();
  Label label = new Label("Some\ntext");
  label.setGraphic(new ImageView(getClass().getResource("/images/Folder-icon.png").toExternalForm()));
  label.setMaxWidth(Double.POSITIVE_INFINITY);
  label.setMaxHeight(Double.POSITIVE_INFINITY);
  label.setStyle("-fx-border-color: blue;");
  root.setCenter(label);
  contentDisplayBox.getItems().addAll(ContentDisplay.values());
  contentDisplayBox.getSelectionModel().select(ContentDisplay.LEFT);
  label.contentDisplayProperty().bind(contentDisplayBox.valueProperty());
  label.alignmentProperty().bind(alignmentBox.valueProperty());
  label.textAlignmentProperty().bind(textAlignmentBox.valueProperty());
  ctrls.setPadding(new Insets(10));
  ctrls.addRow(0, new Label("Content display:"), new Label("Alignment:"), new Label("Text Alignment:"));
  ctrls.addRow(1,  contentDisplayBox, alignmentBox, textAlignmentBox);
  primaryStage.setScene(scene);
  primaryStage.show();

代码示例来源：origin: stackoverflow.com

new Text("Don't have an account? "), createAccount
);
flow.setPadding(new Insets(10));
primaryStage.setScene(new Scene(new Group(flow)));
primaryStage.show();
accountCreation.initOwner(primaryStage);
accountCreation.setTitle("Create Account");
accountCreation.setScene(new Scene(new Label("<Account Creation Form Goes Here>"), 250, 50));

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