Work with String Formatting

Pluralsite/src/intermediate/Java Fundamentals - The Core Platform/src/string/formatting/Main.java

@@ -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);
+        }
+    }
+}