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Program to read a file import java.util.Scanner; import java.io.File; public class FileRead {     public static void main(String[] args) throws Exception {         Scanner scan = new Scanner(new File(args[0]));                 while (scan.hasNext()) {             System.out.println(scan.nextLine());         }     } }
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Program to Write to a file import java.io.File; import java.io.PrintStream; public class FileWrite {     public static void main(String[] args) throws Exception {         PrintStream ps = new PrintStream(new File(args[0]));                 ps.println("My new file created by java I/O");         ps.print("I'm on new line.");         ps.print("i'm still on same line.");         //ps.close();     } }  
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Program to Toggle contents of any file import java.io.File; import java.util.Scanner; import java.io.PrintStream; public class Toggle {     public static void main(String[] args) throws Exception {         File fileOld = new File(args[0]);         File fileNew = new File("temp");         Scanner scan = new Scanner(fileOld);         PrintStream ps = new PrintStream(fileNew);                    while (scan.hasNext()) {             String content = scan.nextLine();                        for (int i = 0; i < content.length(); i++) {                 if (content.charAt(i) >= 'a' && conten...
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/*  * StringDemo.java  *  * Copyright 2013 Ajay Bhatia <ajay@dumb-box>  *  * This program is free software; you can redistribute it and/or modify  * it under the terms of the GNU General Public License as published by  * the Free Software Foundation; either version 2 of the License, or  * (at your option) any later version.  *  * This program is distributed in the hope that it will be useful,  * but WITHOUT ANY WARRANTY; without even the implied warranty of  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  * GNU General Public License for more details.  *  * You should have received a copy of the GNU General Public License  * along with this program; if not, write to the Free Software  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,  * MA 02110-1301, USA.  *  *  */ public class StringDemo {        public static void ma...
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/*  * CircleAnimator.java  *  * Copyright 2013 Ajay Bhatia <ajay@dumb-box>  *  * This program is free software; you can redistribute it and/or modify  * it under the terms of the GNU General Public License as published by  * the Free Software Foundation; either version 2 of the License, or  * (at your option) any later version.  *  * This program is distributed in the hope that it will be useful,  * but WITHOUT ANY WARRANTY; without even the implied warranty of  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  * GNU General Public License for more details.  *  * You should have received a copy of the GNU General Public License  * along with this program; if not, write to the Free Software  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,  * MA 02110-1301, USA.  *  *  */ import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JB...
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/*  * PictureViewer.java  *  * Copyright 2013 Ajay Bhatia <ajay@dumb-box>  *  * This program is free software; you can redistribute it and/or modify  * it under the terms of the GNU General Public License as published by  * the Free Software Foundation; either version 2 of the License, or  * (at your option) any later version.  *  * This program is distributed in the hope that it will be useful,  * but WITHOUT ANY WARRANTY; without even the implied warranty of  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  * GNU General Public License for more details.  *  * You should have received a copy of the GNU General Public License  * along with this program; if not, write to the Free Software  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,  * MA 02110-1301, USA.  *  *  */ import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JBu...
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/*  * MoveText.java  *  * Copyright 2013 Ajay Bhatia <ajay@dumb-box>  *  * This program is free software; you can redistribute it and/or modify  * it under the terms of the GNU General Public License as published by  * the Free Software Foundation; either version 2 of the License, or  * (at your option) any later version.  *  * This program is distributed in the hope that it will be useful,  * but WITHOUT ANY WARRANTY; without even the implied warranty of  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  * GNU General Public License for more details.  *  * You should have received a copy of the GNU General Public License  * along with this program; if not, write to the Free Software  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,  * MA 02110-1301, USA.  *  *  */ import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionP...
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