![ViewerFrame.java
import javax.swing.JFrame;
public class ViewerFrame extends JFrame
{
public ViewerFrame(){
OpsPanel OP = new OpsPanel();
add(OP);
}
public static void main(String[] args){
ViewerFrame v = new ViewerFrame();
v.setSize(1000,600);
v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
v.setVisible(true);
}
}
OpsPanel.java
import java.awt.Graphics;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JPanel;
import java.awt.Font;
public class OpsPanel extends JPanel{
private int x = 50;
private int y = 50;
private int titleX = 50;
private int titleY = 30;
private Scanner in;
private String intLine1;](https://image.slidesharecdn.com/viewerframe-230408114606-bc9afe72/85/ViewerFrame-java-import-javax-swing-JFrame-public-class-Viewer-pdf-1-320.jpg)
![}
public static void main(String[] args){
ViewerFrame v = new ViewerFrame();
v.setSize(1000,600);
v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
v.setVisible(true);
}
}
OpsPanel.java
import java.awt.Graphics;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JPanel;
import java.awt.Font;
public class OpsPanel extends JPanel{
private int x = 50;
private int y = 50;
private int titleX = 50;
private int titleY = 30;
private Scanner in;
private String intLine1;
private String intLine2;
private String sign;
private ArrayList list = new ArrayList<>();
public OpsPanel(){
//Open file for reading and catch if file isn't there.
try{](https://image.slidesharecdn.com/viewerframe-230408114606-bc9afe72/85/ViewerFrame-java-import-javax-swing-JFrame-public-class-Viewer-pdf-6-320.jpg)
ViewerFrame.java import javax.swing.JFrame;public class Viewer.pdf
- 1. ViewerFrame.java import javax.swing.JFrame; public class ViewerFrame extends JFrame { public ViewerFrame(){ OpsPanel OP = new OpsPanel(); add(OP); } public static void main(String[] args){ ViewerFrame v = new ViewerFrame(); v.setSize(1000,600); v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); v.setVisible(true); } } OpsPanel.java import java.awt.Graphics; import java.io.FileNotFoundException; import java.io.FileReader; import java.util.ArrayList; import java.util.Scanner; import javax.swing.JPanel; import java.awt.Font; public class OpsPanel extends JPanel{ private int x = 50; private int y = 50; private int titleX = 50; private int titleY = 30; private Scanner in; private String intLine1;
- 2. private String intLine2; private String sign; private ArrayList list = new ArrayList<>(); public OpsPanel(){ //Open file for reading and catch if file isn't there. try{ in = new Scanner(new FileReader("addsAndSubtracts.txt")); } catch(FileNotFoundException nf){ System.out.println("File Not Found!"); } while(in.hasNext()){ intLine1 = in.next(); sign = in.next(); intLine2 = in.next(); System.out.println(intLine1 + sign + intLine2); list.add(new Ops(intLine1, intLine2, sign)); } repaint(); } @Override public void paintComponent(Graphics g){
- 3. super.paintComponent(g); g.setFont(new Font(g.getFont().getFontName(),Font.PLAIN, 20)); g.drawString("Operand 1 +/- Operand 2 = Result", titleX, titleY); g.setFont(new Font(g.getFont().getFontName(),Font.PLAIN, 12)); for (Ops o: list) { o.drawInfo(g, x, y); y+=15; } } } Ops.java import java.util.LinkedList; import java.awt.*; import javax.swing.*; //import java.util.Formatter; public class Ops extends JPanel{ private String bigInt1; private String sign1; private String bigInt2; private String sign2; private String opSign; private String calcSign; private LinkedList largeInt; private LinkedList smallInt; private LinkedList resultInt; public Ops(String bI1, String bI2, String sign){ //Save original sign for display.
- 4. opSign = sign; //Save signs on strings. if(bI1.charAt(0) == '-'){ bI1 = bI1.substring(1); sign1 = "-"; } else{ sign1 = ""; } if(bI2.charAt(0) == '-'){ bI2 = bI2.substring(1); sign2 = "-"; } else{ sign2 = ""; } //Test lengths for padding and other operations. if(bI1.length() > bI2.length()){ } else if(bI2.length() > bI1.length()){ } else{ } if(sign.equalsIgnoreCase("+")){ if(sign1.equalsIgnoreCase("") && sign2.equalsIgnoreCase("")){ } else{
- 5. } } } public void calcResult(String bI1, String bI2, String calcS){ } @Override public String toString(){ String.format(""); return sign1 + bigInt1 + " " + opSign + " " + sign2 + bigInt2 + " = " + resultInt; } public void drawInfo(Graphics g, int x, int y){ g.drawString(toString(), x,y); } } Solution ViewerFrame.java import javax.swing.JFrame; public class ViewerFrame extends JFrame { public ViewerFrame(){ OpsPanel OP = new OpsPanel(); add(OP);
- 6. } public static void main(String[] args){ ViewerFrame v = new ViewerFrame(); v.setSize(1000,600); v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); v.setVisible(true); } } OpsPanel.java import java.awt.Graphics; import java.io.FileNotFoundException; import java.io.FileReader; import java.util.ArrayList; import java.util.Scanner; import javax.swing.JPanel; import java.awt.Font; public class OpsPanel extends JPanel{ private int x = 50; private int y = 50; private int titleX = 50; private int titleY = 30; private Scanner in; private String intLine1; private String intLine2; private String sign; private ArrayList list = new ArrayList<>(); public OpsPanel(){ //Open file for reading and catch if file isn't there. try{
- 7. in = new Scanner(new FileReader("addsAndSubtracts.txt")); } catch(FileNotFoundException nf){ System.out.println("File Not Found!"); } while(in.hasNext()){ intLine1 = in.next(); sign = in.next(); intLine2 = in.next(); System.out.println(intLine1 + sign + intLine2); list.add(new Ops(intLine1, intLine2, sign)); } repaint(); } @Override public void paintComponent(Graphics g){ super.paintComponent(g); g.setFont(new Font(g.getFont().getFontName(),Font.PLAIN, 20)); g.drawString("Operand 1 +/- Operand 2 = Result", titleX, titleY); g.setFont(new Font(g.getFont().getFontName(),Font.PLAIN, 12)); for (Ops o: list) { o.drawInfo(g, x, y); y+=15;
- 8. } } } Ops.java import java.util.LinkedList; import java.awt.*; import javax.swing.*; //import java.util.Formatter; public class Ops extends JPanel{ private String bigInt1; private String sign1; private String bigInt2; private String sign2; private String opSign; private String calcSign; private LinkedList largeInt; private LinkedList smallInt; private LinkedList resultInt; public Ops(String bI1, String bI2, String sign){ //Save original sign for display. opSign = sign; //Save signs on strings. if(bI1.charAt(0) == '-'){ bI1 = bI1.substring(1); sign1 = "-"; } else{ sign1 = "";
- 9. } if(bI2.charAt(0) == '-'){ bI2 = bI2.substring(1); sign2 = "-"; } else{ sign2 = ""; } //Test lengths for padding and other operations. if(bI1.length() > bI2.length()){ } else if(bI2.length() > bI1.length()){ } else{ } if(sign.equalsIgnoreCase("+")){ if(sign1.equalsIgnoreCase("") && sign2.equalsIgnoreCase("")){ } else{ } } } public void calcResult(String bI1, String bI2, String calcS){ }
- 10. @Override public String toString(){ String.format(""); return sign1 + bigInt1 + " " + opSign + " " + sign2 + bigInt2 + " = " + resultInt; } public void drawInfo(Graphics g, int x, int y){ g.drawString(toString(), x,y); } }