我想写一个计算器来查看平均成绩，但它没有开始。 如你所见，用java swing编写，帮助将不胜感激。
主要班级：
package me.imfrozen;
public class TheMainClass {
public static void main(String[] args) {
new FrameA();
}
}
FrameA：
package me.imfrozen;
import java.awt.Font;
import java.awt.Toolkit;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.SpinnerNumberModel;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
@SuppressWarnings("serial")
public class FrameA extends JFrame {
static JSpinner sa6;
static JSpinner sa7;
static JSpinner sa8;
static JSpinner sa1;
static JSpinner sa2;
static JSpinner sa3;
static JSpinner sa4;
static JSpinner sa5;
static JSpinner ex2;
static JSpinner ex3;
static JSpinner ex7;
static JSpinner ex8;
static JSpinner ex5;
static JSpinner ex4;
static JSpinner ex6;
static JSpinner ex1;
static JSpinner af2;
static JSpinner af4;
static JSpinner af6;
static JSpinner af8;
static JSpinner af3;
static JSpinner af1;
static JSpinner af5;
static JSpinner af7;
static JLabel lblNewLabel;
static JLabel label;
public FrameA() {
setTitle("Notenrechner");
setIconImage(Toolkit.getDefaultToolkit().getImage(FrameA.class.getResource("/me/imfrozen/icon.png")));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 500, 400);
JLabel lblSchulaufgaben = new JLabel("Schulaufgaben");
lblSchulaufgaben.setFont(new Font("Tahoma", Font.PLAIN, 20));
JLabel lblExen = new JLabel("Stegreifaufgaben");
lblExen.setFont(new Font("Tahoma", Font.PLAIN, 20));
JLabel lblAbfragen = new JLabel("Abfragen");
lblAbfragen.setFont(new Font("Tahoma", Font.PLAIN, 20));
JSpinner sa5 = new JSpinner();
sa5.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa5.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa6 = new JSpinner();
sa6.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa6.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa7 = new JSpinner();
sa7.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa7.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa8 = new JSpinner();
sa8.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa8.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa1 = new JSpinner();
sa1.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa1.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa2 = new JSpinner();
sa2.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa2.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa3 = new JSpinner();
sa3.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa3.setFont(new Font("Tahoma", Font.PLAIN, 30));
sa4 = new JSpinner();
sa4.setModel(new SpinnerNumberModel(0, 0, 6, 1));
sa4.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex2 = new JSpinner();
ex2.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex2.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex3 = new JSpinner();
ex3.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex3.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex7 = new JSpinner();
ex7.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex7.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex8 = new JSpinner();
ex8.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex8.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex5 = new JSpinner();
ex5.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex5.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex4 = new JSpinner();
ex4.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex4.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex6 = new JSpinner();
ex6.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex6.setFont(new Font("Tahoma", Font.PLAIN, 30));
ex1 = new JSpinner();
ex1.setModel(new SpinnerNumberModel(0, 0, 6, 1));
ex1.setFont(new Font("Tahoma", Font.PLAIN, 30));
af2 = new JSpinner();
af2.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af2.setFont(new Font("Tahoma", Font.PLAIN, 30));
af4 = new JSpinner();
af4.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af4.setFont(new Font("Tahoma", Font.PLAIN, 30));
af6 = new JSpinner();
af6.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af6.setFont(new Font("Tahoma", Font.PLAIN, 30));
af8 = new JSpinner();
af8.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af8.setFont(new Font("Tahoma", Font.PLAIN, 30));
af3 = new JSpinner();
af3.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af3.setFont(new Font("Tahoma", Font.PLAIN, 30));
af1 = new JSpinner();
af1.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af1.setFont(new Font("Tahoma", Font.PLAIN, 30));
af5 = new JSpinner();
af5.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af5.setFont(new Font("Tahoma", Font.PLAIN, 30));
af7 = new JSpinner();
af7.setModel(new SpinnerNumberModel(0, 0, 6, 1));
af7.setFont(new Font("Tahoma", Font.PLAIN, 30));
lblNewLabel = new JLabel("Dein Notendurchschnitt:");
lblNewLabel.setFont(new Font("Tahoma", Font.PLAIN, 30));
label = new JLabel("" + rechner.note);
label.setFont(new Font("Tahoma", Font.PLAIN, 30));
GroupLayout groupLayout = new GroupLayout(getContentPane());
groupLayout.setHorizontalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(37)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(lblNewLabel)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(lblSchulaufgaben)
.addGap(33)
.addComponent(lblExen)
.addGap(36)
.addComponent(lblAbfragen))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(sa1, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(sa5, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(63)
.addComponent(ex2, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(ex5, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(38)
.addComponent(af1, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(af2, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(sa2, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(sa6, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(63)
.addComponent(ex3, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(ex4, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(38)
.addComponent(af3, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(af4, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(sa3, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(sa7, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(sa4, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(sa8, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)))
.addGap(63)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(ex7, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(ex6, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createSequentialGroup()
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(ex8, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(ex1, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)))
.addGap(38)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(af5, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGap(10)
.addComponent(af6, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
.addComponent(label)
.addComponent(af7, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(af8, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)))))
.addContainerGap(16, Short.MAX_VALUE))
);
groupLayout.setVerticalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(11)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(lblSchulaufgaben, GroupLayout.PREFERRED_SIZE, 31, GroupLayout.PREFERRED_SIZE)
.addComponent(lblExen, GroupLayout.PREFERRED_SIZE, 31, GroupLayout.PREFERRED_SIZE)
.addComponent(lblAbfragen, GroupLayout.PREFERRED_SIZE, 31, GroupLayout.PREFERRED_SIZE))
.addGap(11)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(sa1, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(sa5, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(ex2, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(ex5, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(af1, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(af2, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGap(11)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(sa2, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(sa6, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(ex3, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(ex4, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(af3, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(af4, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGap(11)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(sa3, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(sa7, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(ex7, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(ex6, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addComponent(af5, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(af6, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGap(11)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(sa4, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(sa8, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(af7, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(af8, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE))
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(ex1, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)
.addComponent(ex8, GroupLayout.PREFERRED_SIZE, 50, GroupLayout.PREFERRED_SIZE)))
.addGap(18)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(lblNewLabel)
.addComponent(label))
.addContainerGap(20, Short.MAX_VALUE))
);
getContentPane().setLayout(groupLayout);
}
}
rechner（德语计算器）：
package me.imfrozen;
public class rechner {
public static int note = 1;
int a = 0, b = 0, c = 0;
public static double sa_ges = 0;
int sa1 = (Integer) FrameA.sa1.getValue();
int sa2 = (Integer) FrameA.sa2.getValue();
int sa3 = (Integer) FrameA.sa3.getValue();
int sa4 = (Integer) FrameA.sa4.getValue();
int sa5 = (Integer) FrameA.sa5.getValue();
int sa6 = (Integer) FrameA.sa6.getValue();
int sa7 = (Integer) FrameA.sa7.getValue();
int sa8 = (Integer) FrameA.sa8.getValue();
int ex1 = (Integer) FrameA.ex1.getValue();
int ex2 = (Integer) FrameA.ex2.getValue();
int ex3 = (Integer) FrameA.ex3.getValue();
int ex4 = (Integer) FrameA.ex4.getValue();
int ex5 = (Integer) FrameA.ex5.getValue();
int ex6 = (Integer) FrameA.ex6.getValue();
int ex7 = (Integer) FrameA.ex7.getValue();
int ex8 = (Integer) FrameA.ex8.getValue();
int af1 = (Integer) FrameA.af1.getValue();
int af2 = (Integer) FrameA.af2.getValue();
int af3 = (Integer) FrameA.af3.getValue();
int af4 = (Integer) FrameA.af4.getValue();
int af5 = (Integer) FrameA.af5.getValue();
int af6 = (Integer) FrameA.af6.getValue();
int af7 = (Integer) FrameA.af7.getValue();
int af8 = (Integer) FrameA.af8.getValue();
int sa = 0, ex = 0, af = 0, exaf = 0;
{
//SCHULAUFGABEN
if (sa1 >= 1){
a++;
}
if (sa2 >= 1){
a++;
}
if (sa3 >= 1){
a++;
}
if (sa4 >= 1){
a++;
}
if (sa5 >= 1){
a++;
}
if (sa6 >= 1){
a++;
}
if (sa7 >= 1){
a++;
}
if (sa8 >= 1){
a++;
}
//EXEN
if (ex1 >= 1){
b++;
}
if (ex2 >= 1){
b++;
}
if (ex3 >= 1){
b++;
}
if (ex4 >= 1){
b++;
}
if (ex5 >= 1){
b++;
}
if (ex6 >= 1){
b++;
}
if (ex7 >= 1){
b++;
}
if (ex8 >= 1){
b++;
}
//ABFRAGEN
if (af1 >= 1){
c++;
}
if (af2 >= 1){
c++;
}
if (af3 >= 1){
c++;
}
if (af4 >= 1){
c++;
}
if (af5 >= 1){
c++;
}
if (af6 >= 1){
c++;
}
if (af7 >= 1){
c++;
}
if (af8 >= 1){
c++;
}
//AUSRECHNEN
sa = sa1+sa2+sa3+sa4+sa5+sa6+sa7+sa8;
ex = (ex1+ex2+ex3+ex4+ex5+ex6+ex7+ex8) / b;
af = (af1+af2+af3+af4+af5+af6+af7+af8) / c;
exaf = ex + af;
note = (sa + exaf) / a++ ;
}
}
答案 0 :(得分：1)
你错过了FrameA代码中的setVisible(true);行，没有它，你的代码将不会被显示
答案 1 :(得分：0)
尝试：
...
FrameA frame = new FrameA();
frame.pack();
frame.setVisible(true);