第三題
import java.io.FileInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.FileOutputStream;
import java.io.IOException;
/*此檔案使用indata.txt輸入*/
class StringFileIO {public static void main (String args[]) {String thisLine;for (int i=0; i < args.length; i++) {try {FileInputStream fin = new FileInputStream(args[i]);FileOutputStream fout = new FileOutputStream("outdata.txt");try {DataInputStream myInput = new DataInputStream(fin);PrintStream myOutput = new PrintStream(fout);try {while ((thisLine = myInput.readLine()) != null) {System.out.println(thisLine);myOutput.println(thisLine);}}catch (Exception e) {System.err.println("Error: " + e);}}catch (Exception e) {System.err.println("Error: " + e);}}catch (Exception e) {System.err.println("failed to open file " + args[i]);System.err.println("Error: " + e);}}}}
第四題
import java.awt.geom.Point2D;class ComputeDistance {public static void main (String args[]) {double sum;Point2D.Double p1 = new Point2D.Double(370618.3544, 2782219.88);Point2D.Double p2 = new Point2D.Double(370829.2355, 2782061.873);Point2D.Double p3 = new Point2D.Double(371594.2425, 2781484.81);Point2D.Double p4 = new Point2D.Double(371593.3845, 2782023.718);Point2D.Double p5 = new Point2D.Double(371759.7823, 2782158.424);System.out.println("P1到P2的距離: " + p1.distance(p2));System.out.println("P2到P3的距離: " + p2.distance(p3));System.out.println("P3到P4的距離: " + p3.distance(p4));System.out.println("P4到P5的距離: " + p4.distance(p5));sum = p1.distance(p2) + p2.distance(p3) + p3.distance(p4) + p4.distance(p5);System.out.println("總距離為: " + sum);}}
第五題
import java.io.*;import java.awt.geom.Point2D;public class Keyin {public static void main(String[] args) throws IOException {BufferedReader keyin;keyin = new BufferedReader(new InputStreamReader(System.in));double p1n, p1e, p2n, p2e, p3n, p3e, p4n, p4e, p5n, p5e, sum;System.out.println("輸入第一點北緯UTM： ");String n1 = keyin.readLine();p1n = Double.parseDouble(n1);System.out.println("輸入第一點東經UTM： ");String e1 = keyin.readLine();p1e = Double.parseDouble(e1);System.out.println("輸入第二點北緯UTM： ");String n2 = keyin.readLine();p2n = Double.parseDouble(n2);System.out.println("輸入第二點東經UTM： ");String e2 = keyin.readLine();p2e = Double.parseDouble(e2);System.out.println("輸入第三點北緯UTM： ");String n3 = keyin.readLine();p3n = Double.parseDouble(n3);System.out.println("輸入第三點東經UTM： ");String e3 = keyin.readLine();p3e = Double.parseDouble(e3);System.out.println("輸入第四點北緯UTM： ");String n4 = keyin.readLine();p4n = Double.parseDouble(n4);System.out.println("輸入第四點東經UTM： ");String e4 = keyin.readLine();p4e = Double.parseDouble(e4);System.out.println("輸入第五點北緯UTM： ");String n5 = keyin.readLine();p5n = Double.parseDouble(n5);System.out.println("輸入第五點東經UTM： ");String e5 = keyin.readLine();p5e = Double.parseDouble(e5);Point2D.Double p1 = new Point2D.Double(p1n, p1e);Point2D.Double p2 = new Point2D.Double(p2n, p2e);Point2D.Double p3 = new Point2D.Double(p3n, p3e);Point2D.Double p4 = new Point2D.Double(p4n, p4e);Point2D.Double p5 = new Point2D.Double(p5n, p5e);System.out.println("P1到P2的距離: " + p1.distance(p2));System.out.println("P2到P3的距離: " + p2.distance(p3));System.out.println("P3到P4的距離: " + p3.distance(p4));System.out.println("P4到P5的距離: " + p4.distance(p5));sum = p1.distance(p2) + p2.distance(p3) + p3.distance(p4) + p4.distance(p5);System.out.println("五點距離總和: " + sum);}}
第六題
import java.io.*;import java.util.*;import java.awt.geom.Point2D;/*此程式使用datain.txt輸入*/class ComputeDatain {public static void main (String args[]) {String thisLine;for (int i=0; i < args.length; i++) {try {FileInputStream fin = new FileInputStream(args[i]);try {DataInputStream myInput = new DataInputStream(fin);try {while ((thisLine = myInput.readLine()) != null) {StringTokenizer st = new StringTokenizer(thisLine, " ,");double p1n, p1e, p2n, p2e, p3n, p3e, p4n, p4e, p5n, p5e, sum;p1n = Double.parseDouble(st.nextToken());System.out.println("第一點北緯UTM：" + p1n);p1e = Double.parseDouble(st.nextToken());System.out.println("第一點東經UTM：" + p1e);p2n = Double.parseDouble(st.nextToken());System.out.println("第二點北緯UTM：" + p2n);p2e = Double.parseDouble(st.nextToken());System.out.println("第二點東經UTM：" + p2e);p3n = Double.parseDouble(st.nextToken());System.out.println("第三點北緯UTM：" + p3n);p3e = Double.parseDouble(st.nextToken());System.out.println("第三點東經UTM：" + p3e);p4n = Double.parseDouble(st.nextToken());System.out.println("第四點北緯UTM：" + p4n);p4e = Double.parseDouble(st.nextToken());System.out.println("第四點東經UTM：" + p4e);p5n = Double.parseDouble(st.nextToken());System.out.println("第五點北緯UTM：" + p5n);p5e = Double.parseDouble(st.nextToken());System.out.println("第五點東經UTM：" + p5e);Point2D.Double p1 = new Point2D.Double(p1n, p1e);Point2D.Double p2 = new Point2D.Double(p2n, p2e);Point2D.Double p3 = new Point2D.Double(p3n, p3e);Point2D.Double p4 = new Point2D.Double(p4n, p4e);Point2D.Double p5 = new Point2D.Double(p5n, p5e);System.out.println("P1到P2的距離: " + p1.distance(p2) + "公尺");System.out.println("P2到P3的距離: " + p2.distance(p3) + "公尺");System.out.println("P3到P4的距離: " + p3.distance(p4) + "公尺");System.out.println("P4到P5的距離: " + p4.distance(p5) + "公尺");sum = p1.distance(p2) + p2.distance(p3) + p3.distance(p4) + p4.distance(p5);System.out.println("五點距離總和: " + sum + "公尺");}}catch (Exception e) {System.err.println("Error: " + e);}}catch (Exception e) {System.err.println("Error: " + e);}}catch (Exception e) {System.err.println("failed to open file " + args[i]);System.err.println("Error: " + e);}}}}
第七題
import java.io.*;import java.util.*;import java.awt.geom.Point2D;/*此程式使用datain.txt輸入*/class ComputeFootageDatain {public static void main (String args[]) {String thisLine;for (int i=0; i < args.length; i++) {try {FileInputStream fin = new FileInputStream(args[i]);try {DataInputStream myInput = new DataInputStream(fin);try {while ((thisLine = myInput.readLine()) != null) {StringTokenizer st = new StringTokenizer(thisLine, " ,");double p1n, p1e, p2n, p2e, p3n, p3e, p4n, p4e, p5n, p5e, sum;p1n = Double.parseDouble(st.nextToken());System.out.println("第一點北緯UTM：" + p1n);p1e = Double.parseDouble(st.nextToken());System.out.println("第一點東經UTM：" + p1e);p2n = Double.parseDouble(st.nextToken());System.out.println("第二點北緯UTM：" + p2n);p2e = Double.parseDouble(st.nextToken());System.out.println("第二點東經UTM：" + p2e);p3n = Double.parseDouble(st.nextToken());System.out.println("第三點北緯UTM：" + p3n);p3e = Double.parseDouble(st.nextToken());System.out.println("第三點東經UTM：" + p3e);p4n = Double.parseDouble(st.nextToken());System.out.println("第四點北緯UTM：" + p4n);p4e = Double.parseDouble(st.nextToken());System.out.println("第四點東經UTM：" + p4e);p5n = Double.parseDouble(st.nextToken());System.out.println("第五點北緯UTM：" + p5n);p5e = Double.parseDouble(st.nextToken());System.out.println("第五點東經UTM：" + p5e);Point2D.Double p1 = new Point2D.Double(p1n, p1e);Point2D.Double p2 = new Point2D.Double(p2n, p2e);Point2D.Double p3 = new Point2D.Double(p3n, p3e);Point2D.Double p4 = new Point2D.Double(p4n, p4e);Point2D.Double p5 = new Point2D.Double(p5n, p5e);System.out.println("一英尺=0.3048公尺");System.out.println("P1到P2的距離: " + p1.distance(p2) + "公尺");System.out.println("P1到P2的距離: " + p1.distance(p2)/0.3048 + "英尺");System.out.println("P2到P3的距離: " + p2.distance(p3) + "公尺");System.out.println("P2到P3的距離: " + p2.distance(p3)/0.3048 + "英尺");System.out.println("P3到P4的距離: " + p3.distance(p4) + "公尺");System.out.println("P3到P4的距離: " + p3.distance(p4)/0.3048 + "英尺");System.out.println("P4到P5的距離: " + p4.distance(p5) + "公尺");System.out.println("P4到P5的距離: " + p4.distance(p5)/0.3048 + "英尺");sum = p1.distance(p2) + p2.distance(p3) + p3.distance(p4) + p4.distance(p5);System.out.println("五點距離總和: " + sum + "公尺");System.out.println("五點距離總和: " + sum/0.3048 + "英尺");}}catch (Exception e) {System.err.println("Error: " + e);}}catch (Exception e) {System.err.println("Error: " + e);}}catch (Exception e) {System.err.println("failed to open file " + args[i]);System.err.println("Error: " + e);}}}}
