Use the ‘b’ conversion character for month name in Java.Use the ‘m’ conversion character for month number in Java.Here, we are using Formatter and Calendar class, therefore import the following packages.import java.util.Calendar; import java.util.Formatter;The following is an example to display month name and number −Example Live Demoimport java.util.Calendar; import java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); Calendar cal = Calendar.getInstance(); System.out.println("Current date and time: "+cal.getTime()); ... Read More

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the system start time, use the getStartTime() method −new Date(runtimeMX.getStartTime()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 Start Time = "+new Date(runtimeMX.getStartTime())); } }OutputSystem Start Time = Mon Nov 26 07:03:19 UTC 2018

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the boot path, use the getBootClassPath() method −runtimeMX.getBootClassPath()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("Class path = "+runtimeMX.getClassPath());       System.out.println("Boot Class path = "+runtimeMX.getBootClassPath());     } }OutputClass path = /home/cg/root/GNUstep/Library/Libraries/Java:/usr/GNUstep/Local/Library/Libraries/Java:/usr/GNUstep/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 Boot Class path = /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/resources.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/rt.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/sunrsasign.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/jsse.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/jce.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/charsets.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/jfr.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-1.b16.fc26.x86_64/jre/classesRead More

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the class path, use the getClassPath() method −runtimeMX.getClassPath()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("Class path = "+runtimeMX.getClassPath()); } }OutputClass path = /home/cg/root/GNUstep/Library/Libraries/Java:/usr/GNUstep/Local/Library/Libraries/Java:/usr/GNUstep/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.jarRead More

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine −RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();Let us get the JVM uptime using the getUptime() method −runtimeMX.getUptime()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("JVM Uptime = "+runtimeMX.getUptime() + " ms"); } }OutputJVM Uptime = 81 msLet us run the code again, to get the following output −JVM Uptime = 78 ms

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

To display table with columns as output, use the Formatter class. For working with Formatter class, import the following package −import java.util.Formatter;Consider an array with some elements. This is the array which we will be shown as output in tabular form −double arr[] = { 1.7, 2.5, 3.1, 4.5, 5.7, 6.9, 7.7, 8.9, 9.1 };While displaying the double array values, use the %f to set spaces −for (double d : arr) { f.format("%14.2f %14.2f %15.2f", d, Math.ceil(d), Math.floor(d)); }The following is an example −Example Live Demoimport java.util.Formatter; public class Demo { public static void main(String[] ... 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