Programming Articles - Page 2936 of 3363

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the system properties, use the getSystemProperties() method −System.out.println("System properties from RuntimeMXBean: "+runtimeMX.getSystemProperties());The following is an example −Example Live Demoimport java.lang.management.ManagementFactory; import java.lang.management.RuntimeMXBean; import java.util.Date; public class Demo { public static void main(String args[]) throws Exception { RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean(); System.out.println("System properties from RuntimeMXBean: "+runtimeMX.getSystemProperties()); } }OutputSystem properties from RuntimeMXBean: {awt.toolkit=sun.awt.X11.XToolkit, file.encoding.pkg=sun.io, java.specification.version=1.8, sun.cpu.isalist=, sun.jnu.encoding=UTF-8, java.class.path=/home/cg/root/GNUstep/Library/Libraries/Java:/usr/GNUstep/Local/Library/Libraries/Java:/usr/G NUstep/System/Library/Libraries/Java::/usr/share/java/mysql-connector- java.jar:.:/var/www/html/lib:/var/www/html/lib/dom4j-1.6.jar:/var/www/html/lib/guava- 18.0.jar:/var/www/html/lib/jackson-all.jar:/var/www/html/lib/jaxen- 1.1.4.jar:/var/www/html/lib/jcommon.jar:/var/www/html/lib/jdom2- 2.0.5.jar:/var/www/html/lib/jfreechart.jar:/var/www/html/lib/junit-4.12.jar:/var/www/html/lib/spymemcached- 2.10.3.jar:/var/www/html/lib/stax-1.2.0.jar:/var/www/html/lib/xstream-1.4.7.jar:/var/www/html/lib/gson- 2.3.1.jar:/var/www/html/lib/hamcrest-core-1.3.jar, java.vm.vendor=Oracle Corporation, ... Read More

To display at most 10 characters in a string, work with the Formatter class.Import the following package for Formatter class in Java −import java.util.Formatter;Create a new Formatter object −Formatter f = new Formatter();Let us now display at most 10 characters in a string −f = new Formatter(); System.out.println("Displaying at most 10 characters: "+f.format("%.10s", "This is demo text!"));The following is an example −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); String str = "This is demo ... Read More

To format, use the Formatter class. Import the following package to work with the Formatter class in Java −import java.util.Formatter;Create a Formatter object and format to 2 decimal places in a 10-character field −Formatter f = new Formatter(); System.out.println(f.format("%10.2e", 3989.7886));The following is the complete example −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); System.out.println(f.format("%08d", 697)); f = new Formatter(); System.out.println(f.format("%03d", 9878)); f = new Formatter(); System.out.println(f.format("%10.2e", 3989.7886)); } }Output00000697 9878 3.99e+03

In this article, we will learn to display a table with columns in the output using Formatter in Java. The table will have headings and show different calculations of an array of floating-point numbers. The first column will display the original number, the second will display the number rounded up, and the third will display the number rounded down. Problem Statement Write a Java program to display a table with columns in the output using Formatter. Input double arr[] = { 1.7, 2.5, 3.1, 4.5, 5.7, 6.9, 7.7, 8.9, 9.1 }; Output The point list... Points1 Points2 Points3 1.70 2.00 1.00 2.50 ... Read More

The minimum field width specifier is what you include between % and the format conversion code.To include a 0 before the field width specifier, pad with 0's. An integer between the % sign and the format conversion code acts as a minimum field width specifier.Let us see an example −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); System.out.println(f.format("%08d", 697)); f = new Formatter(); System.out.println(f.format("%10d", 9878)); f = new Formatter(); System.out.println(f.format("%06d", 697)); } }Output00000697 9878 000697

Apply the # flag to the %o, %x, %e, and %f format specifiers. If you want to display the hexadecimal number with a 0x prefix, then precede the %x specifier with #.Preceding the %x specifier with a #, the hexadecimal number will be printed with a 0x prefix.Let us see an example wherein $e is used. It includes a decimal point, even if the decimal digits are not present −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); System.out.println(f.format("%#e", 5F)); } }Output5.000000e+00

For using the Formatter class, import the following package −import java.util.Formatter;We can group specifiers as shown below −Formatter f = new Formatter(); f.format("%,.2f", 38178.9889);The above sets thousands separator and 2 decimal places.The following is an example −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); f.format("%d", 50); System.out.println(f); f = new Formatter(); f.format("%,.2f", 38178.9889); System.out.println(f); } }Output50 38,178.99

A negative number output can be shown using the Formatter object −Formatter f = new Formatter(); f.format("%12.2f", -7.598); System.out.println(f);Try the below given code to format a Negative Number Output with Parentheses −Formatter f = new Formatter(); f.format("%(d", -50); System.out.println(f);The following is an example −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); f.format("% d", 50); System.out.println(f); // negative number inside parentheses f = new Formatter(); f.format("%(d", -50); System.out.println(f); } }Output50 (50)

For format specifier, import the following package −import java.util.Formatter;Create a formatter object and set space format specifier −Formatter f = new Formatter(); f.format("% d", -50); System.out.println(f); f = new Formatter(); f.format("% d", 90); System.out.println(f); f = new Formatter(); f.format("%10d", -50); System.out.println(f); f = new Formatter(); f.format("% 10d", 90); System.out.println(f);The following is an example displaying different forms of space format specifiers −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); f.format("% d", -50); ... Read More

In Java, the left-justifying output means aligning text or data to the left within a specified width, with extra spaces on the right to fill the remaining space. It is commonly used when displaying tabular data or formatting strings. Left justification can be obtained using methods such as String.format() or printf(), which allow you to specify the width of the output field and the alignment of the content. Including a minus sign after the %, makes it left justified. Note − By default, output is right justified To display the Left justify output in Java is quite easy. Let us learn the following methods: ... Read More