------ Solution ------- -------------------------------------
not what it means ? Still intact ?
If so, then you certainly do not pass the object in the past . . .
you just send the code I can help you change it .
public class T4 extends JFrame{
private JPanel mainPanel;
JButton btn;
public static JTextField name;
public T4() {
super("标题");
this.setPreferredSize(new Dimension(660,320));
this.setBounds(0, 0, 660, 320);
mainPanel=new JPanel();
this.setContentPane(mainPanel);
name=new JTextField(15);
mainPanel.add(name);
btn=new JButton("按我");
mainPanel.add(btn);
btn.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
new T3();
}});
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
T4 t4=new T4();
t4.setVisible(true);
}
}
public class T3 {
public T3() {
T4 t=new T4();
System.out.println(t.name.getText());
}
public static void main(String[] args) {
new T3();
}
}
how the rest of the show at T3 , their landlord to get it
package com.test;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class T4 extends JFrame {
private JPanel mainPanel;
JButton btn;
public JTextField name;
public T3 t3;
public T4() {
super("标题");
this.setPreferredSize(new Dimension(660, 320));
this.setBounds(0, 0, 660, 320);
mainPanel = new JPanel();
this.setContentPane(mainPanel);
name = new JTextField(15);
mainPanel.add(name);
btn = new JButton("按我");
mainPanel.add(btn);
btn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
t3.show();
}
});
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
T4 t4 = new T4();
T3 t3 = new T3(t4);
t4.t3=t3;
t4.setVisible(true);
}
}
class T3 {
T4 t4;
public T3(T4 t4) {
this.t4=t4;
}
public void show(){
System.out.println(t4.name.getText());
}
}
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certainly null ah you are a new object ah
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the A 's name is set to a global variable
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how should I do it ? Hope that helps
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you should first create an A object
A a;
then create b object, a pass inside.
class {
A a;
public B (A a) {
this.a = a;
}
/ / then here you can
a.name.getText ();
/ / a
}
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how should I do it ? Hope that helps
changed : public static JTestFiled name; on it
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Is this okay ? You call that B (a) it ?
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Is this okay ? You call that B (a) it ?
public class Test {
public static void main(String[] args) {
A a;
B b = null;
a=new A(b);
b=new B(a);
a.b=b;
System.out.println(a.b.bnum);
System.out.println(a.anum);
}
}
class A{
public B b;
public int anum=1;
public A(B b) {
this.b=b;
}
}
class B{
public A a;
public int bnum=2;
public B(A a) {
this.a=a;
}
}
You see so you can call each other. . In fact, I had the same idea , and you ,
Of course, this is easy to fuzzy logic , not very recommended. Are generally level concepts . .
------ For reference only -------------------------------------- -
Is this okay ? You call that B (a) it ?
public class Test {
public static void main(String[] args) {
A a;
B b = null;
a=new A(b);
b=new B(a);
a.b=b;
System.out.println(a.b.bnum);
System.out.println(a.anum);
}
}
class A{
public B b;
public int anum=1;
public A(B b) {
this.b=b;
}
}
class B{
public A a;
public int bnum=2;
public B(A a) {
this.a=a;
}
}
You see so you can call each other. . In fact, I had the same idea , and you ,
Of course, this is easy to fuzzy logic , not very recommended. Are generally level concepts . .
public int anum = 1; is not that a global variable that? To access the inside of the B , A is not a direct new anum to get a
------ For reference only -------------------- -------------------
Is this okay ? You call that B (a) it ?
public class Test {
public static void main(String[] args) {
A a;
B b = null;
a=new A(b);
b=new B(a);
a.b=b;
System.out.println(a.b.bnum);
System.out.println(a.anum);
}
}
class A{
public B b;
public int anum=1;
public A(B b) {
this.b=b;
}
}
class B{
public A a;
public int bnum=2;
public B(A a) {
this.a=a;
}
}
You see so you can call each other. . In fact, I had the same idea , and you ,
Of course, this is easy to fuzzy logic , not very recommended. Are generally level concepts . .
public int anum = 1; is not that a global variable that? To access the inside of the B , A is not a direct new anum to get a
I'm helpless . . I want to explain to you how to call each other between the two classes . Rather than values .
If I am inside the constructor anum based on the input parameters on the assignment , you can get it re- new one ?
------ For reference only -------------------------------------- -
Is this okay ? You call that B (a) it ?
public class Test {
public static void main(String[] args) {
A a;
B b = null;
a=new A(b);
b=new B(a);
a.b=b;
System.out.println(a.b.bnum);
System.out.println(a.anum);
}
}
class A{
public B b;
public int anum=1;
public A(B b) {
this.b=b;
}
}
class B{
public A a;
public int bnum=2;
public B(A a) {
this.a=a;
}
}
You see so you can call each other. . In fact, I had the same idea , and you ,
Of course, this is easy to fuzzy logic , not very recommended. Are generally level concepts . .
public int anum = 1; is not that a global variable that? To access the inside of the B , A is not a direct new anum to get a
I'm helpless . . I want to explain to you how to call each other between the two classes . Rather than values .
If I am inside the constructor anum based on the input parameters on the assignment , you can get it re- new one ?
Oh, temporarily not encountered two objects call each other ha. Since I put in the same place values into them, and in the same place it is necessary to take out ?
------ For reference only -------------------------------------- -
references , each creating an object , each object has its own corresponding public property , and static variables are common to all objects share the static variables. Probably so mean . Rookie seeking enlighten
------ For reference only ----------------------------------- ----
Is this okay ? You call that B (a) it ?
public class Test {
public static void main(String[] args) {
A a;
B b = null;
a=new A(b);
b=new B(a);
a.b=b;
System.out.println(a.b.bnum);
System.out.println(a.anum);
}
}
class A{
public B b;
public int anum=1;
public A(B b) {
this.b=b;
}
}
class B{
public A a;
public int bnum=2;
public B(A a) {
this.a=a;
}
}
You see so you can call each other. . In fact, I had the same idea , and you ,
Of course, this is easy to fuzzy logic , not very recommended. Are generally level concepts . .
public int anum = 1; is not that a global variable that? To access the inside of the B , A is not a direct new anum to get a
I'm helpless . . I want to explain to you how to call each other between the two classes . Rather than values .
If I am inside the constructor anum based on the input parameters on the assignment , you can get it re- new one ?
not work that way
------ For reference only ------------------------------- --------
not what it means ? Still intact ?
If so, then you certainly do not pass the object in the past . . .
you just send the code I can help you change it .
------ For reference only -------------------------------------- -
not what it means ? Still intact ?
If so, then you certainly do not pass the object in the past . . .
you just send the code I can help you change it .
public class T4 extends JFrame{
private JPanel mainPanel;
JButton btn;
public static JTextField name;
public T4() {
super("标题");
this.setPreferredSize(new Dimension(660,320));
this.setBounds(0, 0, 660, 320);
mainPanel=new JPanel();
this.setContentPane(mainPanel);
name=new JTextField(15);
mainPanel.add(name);
btn=new JButton("按我");
mainPanel.add(btn);
btn.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
new T3();
}});
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
T4 t4=new T4();
t4.setVisible(true);
}
}
public class T3 {
public T3() {
T4 t=new T4();
System.out.println(t.name.getText());
}
public static void main(String[] args) {
new T3();
}
}
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Haha I guess the landlord two JVM.
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I guess a good standard .
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indeed accurate . .
not be made after people .
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indeed accurate . .
not be made after people .
powerful Yeah , terrible
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page yet when I sent him back piece of it, only to see his reply to a submission reply , I then made a . Awkward
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