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Java Articles
Page 88 of 450
Display localized month name with printf method in Java
To display localized method name in Java, use the ‘B’ conversion character.System.out.printf("Localized month : %TB", d);To display method name in lowercase, use the “%tb”System.out.printf("Localized month : %tB", d);Exampleimport java.util.Date; public class Demo { public static void main(String[] args) { Date d = new Date(); System.out.printf("Morning/afternoon indicator: %tp", d); System.out.printf("Morning/afternoon indicator: %Tp", d); System.out.printf("Localized month : %tB", d); System.out.printf("Localized month : %TB", d); } }OutputMorning/afternoon indicator: pm Morning/afternoon indicator: PM Localized month : November Localized month : NOVEMBERRight justify and left justify values in ...
Read MoreArgument Index in Java
Argument indices allow programmers to reorder the output. Let us see an example.Examplepublic class Demo { public static void main(String[] args) { System.out.printf("Before reordering = %s %s %s %s %s %s", "one", "two", "three", "four", "five", "six" ); System.out.printf("After reordering = %6$s %5$s %4$s %3$s %2$s %1$s", "one", "two", "three", "four", "five", "six" ); System.out.printf("Before reordering = %d %d %d", 100, 200, 300); System.out.printf("After reordering = %2$d %3$d %1$d", 100, 200, 300); } }OutputBefore reordering = one two three four five six After reordering = six ...
Read MoreCreating String Object from Character Array in Java
Here is our character array.char[] ch = { 'T', 'E', 'S', 'T'};To create string object from the above character array is quite easy. Add the array to the string parameter as shown below −String str = new String(ch);Examplepublic class Demo { public static void main(String[] args) { char[] ch = { 'T', 'E', 'S', 'T'}; String str = new String(ch); System.out.println(str); } }OutputTEST
Read MoreCreating String Object from certain part of a character Array in Java
Here is our character array.char[] ch = { 'T', 'E', 'S', 'T', 'I', 'N', 'G'};Create string object from some part of a string using the following String constructor. Through this we are fetching substring “IN” from the character array.String str = new String(ch, 4, 2);Examplepublic class Demo { public static void main(String[] args) { char[] ch = { 'T', 'E', 'S', 'T', 'I', 'N', 'G'}; String str = new String(ch, 4, 2); System.out.println(str); } }OutputIN
Read MoreCreating a string from a subset of the array elements in Java
To get a string from a subset of the character array elements, use the copyValueOf() method. This method returns a String that represents the character sequence in the array specified.Here is our character array.char[] ch = { 'T', 'E', 'S', 'T', 'I', 'N', 'G'};Now, let us create a string from the subset of the above array elements.String str = String.copyValueOf(ch, 4, 2);Examplepublic class Demo { public static void main(String[] args) { char[] ch = { 'T', 'E', 'S', 'T', 'I', 'N', 'G'}; String str = String.copyValueOf(ch, 4, 2); System.out.println(str); } }OutputIN
Read MoreJava Program to construct one String from another
To construct on string from another, firstly take a charcter array for the first string.char ch[] = { 'A', 'M', 'I', 'T' }; String str1 = new String(ch);The above forms first string. Now, let us created another string from the first string.String str2 = new String(str1);In this way, we can easily construct one string from another.Examplepublic class Demo { public static void main(String[] args) { char ch[] = { 'A', 'M', 'I', 'T' }; String str1 = new String(ch); String str2 = new String(str1); String str3 = ...
Read MoreCheck that the String does not contain certain characters in Java
Let’s say the following is our string with special characters.String str = "test*$demo";Check for the special characters.Pattern pattern = Pattern.compile("[^A-Za-z0-9]"); Matcher match = pattern.matcher(str); boolean val = match.find();Now, if the bool value “val” is true, that would mean the special characters are in the string.if (val == true) System.out.println("Special characters are in the string.");Exampleimport java.util.regex.Matcher; import java.util.regex.Pattern; public class Demo { public static void main(String []args) { String str = "test*$demo"; System.out.println("String: "+str); Pattern pattern = Pattern.compile("[^A-Za-z0-9]"); Matcher match = pattern.matcher(str); boolean val = ...
Read MorePerform Bubble Sort on strings in Java
To perform Bubble Sort, try the below given code. In this each each pair of adjacent elements is compared and the elements are swapped if they are not in order.The following is an example.Examplepublic class Demo { public static void main(String []args) { String str[] = { "s", "k", "r", "v", "n"}; String temp; System.out.println("Sorted string..."); for (int j = 0; j < str.length; j++) { for (int i = j + 1; i < str.length; i++) { ...
Read MoreFormat Calendar with String.format() in Java
Firstly, consider an object with date value.Object arrObj[] = { "Date", Calendar.getInstance() };After that, use the String.format() method to format Calendar and display the date.The following is an example.Exampleimport java.util.Calendar; public class Demo { public static void main(String []args){ Object arrObj[] = { "Date", Calendar.getInstance() }; System.out.println("Formatting Date..."); System.out.println(String.format("%1$s = %2$tY %2$tm %2$te", arrObj)); } }OutputFormatting Date... Date = 2018 11 17
Read MoreRight pad a string in Java
To right pad a string, use the String.format and set the spaces.String.format("%1$-" + 20 + "s", "demotext"));If you add 30 above, it will display the next string after 30 spaces from the beginning.String.format("%1$-" + 30 + "s", "demotext")The following is an example.Examplepublic class Demo { public static void main(String []args){ System.out.print(String.format("%1$-" + 20 + "s", "demotext")); System.out.println("Right padded!"); } }Outputdemotext Right padded!
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