addition_dialog.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'addition_dialog.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

from PyQt5 import QtCore, QtGui, QtWidgets
from py4j.java_gateway import JavaGateway

class Ui_MainWindow(object):
    def setupUi(self, MainWindow, svc):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(452, 247)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(MainWindow.sizePolicy().hasHeightForWidth())
        MainWindow.setSizePolicy(sizePolicy)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget, clicked = lambda : self.press_it(svc))
        self.pushButton.setGeometry(QtCore.QRect(330, 140, 81, 31))
        self.pushButton.setObjectName("pushButton")
        self.varATextBox = QtWidgets.QLineEdit(self.centralwidget)
        self.varATextBox.setGeometry(QtCore.QRect(120, 20, 113, 20))
        self.varATextBox.setObjectName("varATextBox")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(20, 20, 71, 16))
        self.label.setObjectName("label")
        self.label_2 = QtWidgets.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(20, 50, 71, 16))
        self.label_2.setObjectName("label_2")
        self.varBTextBox = QtWidgets.QLineEdit(self.centralwidget)
        self.varBTextBox.setGeometry(QtCore.QRect(120, 50, 113, 20))
        self.varBTextBox.setObjectName("varBTextBox")
        self.resultLbl = QtWidgets.QLabel(self.centralwidget)
        self.resultLbl.setGeometry(QtCore.QRect(40, 110, 231, 41))
        font = QtGui.QFont()
        font.setPointSize(20)
        font.setBold(True)
        font.setWeight(75)
        self.resultLbl.setFont(font)
        self.resultLbl.setObjectName("resultLbl")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 452, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "Add"))
        self.label.setText(_translate("MainWindow", "Variable A"))
        self.label_2.setText(_translate("MainWindow", "Variable B"))
        self.resultLbl.setText(_translate("MainWindow", "TextLabel"))

    def press_it(self, svc):
        a = int(self.varATextBox.text())
        b = int(self.varBTextBox.text())
        c = svc.add(a,b)
        self.resultLbl.setText("Laus: " + str(c))

if __name__ == "__main__":
    import sys

    # launch py4j gateway to lib-jar and expose it as a service
    gateway = JavaGateway.launch_gateway(jarpath='bin/py4j-0.10.9.2.jar', classpath='bin/addition.jar', java_path='jdk-11.0.11+9-jre/bin/java.exe', die_on_exit=True, use_shell=False)
    # create instance of the class of interest within the jar
    svc = gateway.jvm.AdditionService()
    
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()

    # now startup QT-app and pass reference to java-service
    ui.setupUi(MainWindow, svc)
    MainWindow.show()
    sys.exit(app.exec_())