Work with String Formatting

master
Hammy 4 years ago
parent 9b07f2a014
commit 558abeeb60

@ -0,0 +1,126 @@
package string.formatting;
import java.io.BufferedWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Formatter;
import java.util.StringJoiner;
public class Main {
private static final String rootResources = "C:\\Users\\sgoud\\JavaProjects\\Learning-Java\\Pluralsite\\src\\intermediate\\Java Fundamentals - The Core Platform\\resources\\";
public static void main(String[] args) throws IOException {
stringJoiner();
System.out.println();
stringJoinerEmptyCase();
System.out.println();
formattingStrings();
writeFormattedContentToFile();
}
private static void stringJoiner() {
StringJoiner stringJoiner = new StringJoiner(", ");
stringJoiner.add("alpha");
stringJoiner.add("beta");
stringJoiner.add("gamma");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ");
stringJoiner.add("alpha").add("beta").add("gamma");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ", "{", "}");
stringJoiner.add("alpha").add("beta").add("gamma");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner("], [", "[", "]");
stringJoiner.add("alpha").add("beta").add("gamma");
System.out.println(stringJoiner.toString());
}
private static void stringJoinerEmptyCase() {
StringJoiner stringJoiner = new StringJoiner(", ");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ", "{", "}");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ");
stringJoiner.setEmptyValue("EMPTY");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ", "{", "}");
stringJoiner.setEmptyValue("EMPTY");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ");
stringJoiner.setEmptyValue("EMPTY");
stringJoiner.add("");
System.out.println(stringJoiner.toString());
stringJoiner = new StringJoiner(", ", "{", "}");
stringJoiner.setEmptyValue("EMPTY");
stringJoiner.add("");
System.out.println(stringJoiner.toString());
}
private static void formattingStrings() {
int david = 13;
int dawson = 11;
int dillon = 4;
int gordon = 2;
String formattedString = String.format("My nephews are %d, %d, %d and %d years old", david, dawson, dillon, gordon);
System.out.println(formattedString);
System.out.printf("W:%d X:%d\n", 5, 235);
System.out.printf("Y:%d Z:%d\n", 481, 12);
System.out.println();
System.out.printf("W:%4d X:%4d\n", 5, 235);
System.out.printf("Y:%4d Z:%4d\n", 481, 12);
System.out.println();
System.out.printf("W:%04d X:%04d\n", 5, 235);
System.out.printf("Y:%04d Z:%04d\n", 481, 12);
System.out.println();
System.out.printf("W:%-4d X:%-4d\n", 5, 235);
System.out.printf("Y:%-4d Z:%-4d\n", 481, 12);
System.out.println();
System.out.printf("%d\n", 1234567);
System.out.printf("%,d\n", 1234567);
System.out.printf("%,.2f\n", 1234567.0);
System.out.println();
System.out.printf("%d\n", 123);
System.out.printf("%d\n", -456);
System.out.printf("% d\n", 123);
System.out.printf("% d\n", -456);
System.out.printf("%+d\n", 123);
System.out.printf("%+d\n", -456);
System.out.printf("%(d\n", 123);
System.out.printf("%(d\n", -456);
System.out.printf("% (d\n", 123);
}
private static void writeFormattedContentToFile() throws IOException {
int david = 13;
int dawson = 11;
int dillon = 4;
int gordon = 2;
BufferedWriter writer = Files.newBufferedWriter(Paths.get(rootResources + "myFormattedFile.txt"));
try (Formatter formatter = new Formatter(writer)) {
formatter.format("My nephews are %d, %d, %d and %d years old", david, dawson, dillon, gordon);
}
}
}
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