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The insert() method of the StringBuffer class inserts the String starting from an index specified in the parameter along with the stringThe syntax of the insert method is −original_string.insert( index , var)where var is the variable to be inserted and index is the position where the variable var is to be inserted.Let us see an example program −Example Live Demopublic class Example { public static void main(String[] args) { StringBuffer str = new StringBuffer("Hello World"); String a = "Wonderful "; str.insert(6, a); System.out.println(str); } }OutputHello Wonderful World
The Intel 8253 is programmable Interval Timers (PTIs) designed for microprocessors toper form timing and counting functions using three 16-bit registers. Each counter has 2 input pins, i.e. Clock & Gate, and 1 pin for“OUT” output. To operate a counter, a 16-bit count is loaded in its register. On command, it begins to decrement the count until it reaches 0, then it generates a pulse that can be used to interrupt the CPU.Features of 8253It has three independent 16-bit down counters.It can handle inputs from DC to 10MHz.These three counters can be programmed for either binary or BCD count.It is ... Read More
The capacity() method returns the current capacity. It is a part of the StringBuffer. It is the quantity of storage present for recently inserted characters, after which an allocation occurs.Declaration - The capacity() method is declared in the java.lang.StringBuffer class as follows −public int capacity()The capacity of a StringBuffer object can be set by inserting the value to be set while instantiating the StringBuffer class.Let us see an example program showing how the capacity value can be set.Example Live Demoimport java.lang.*; public class Example { public static void main(String[] args) { StringBuffer b = new StringBuffer(100); ... Read More
The StringBuffer append() method appends the String representation of the particular argument to the sequence. It is a method of the java.lang.StringBuffer class. This method returns a reference to the object.The basic syntax for append() method is as follows −public StringBuffer append(data_type variable_name)A program to illustrate the use of append() method is given as follows −Example Live Demoimport java.lang.*; public class Example { public static void main(String[] args) { StringBuffer s1 = new StringBuffer("The sun rises in the east "); System.out.println("Statement : " + s1); s1.append(true); System.out.println("Outcome : ... Read More
The Integer.parseInt() method in Java converts a string to an integer.Let’s say the following is our string −String str = "456";Converting it into integer −Integer.parseInt(str));The following is the complete example −Example Live Demopublic class Demo { public static void main(String[] args) { String str = "456"; System.out.println(Integer.parseInt(str)); } }Output456
Here is our string.String strTime = "20:15:40";Now, use the DateFormat to set the format for date.DateFormat dateFormat = new SimpleDateFormat("hh:mm:ss");Parse the string of time to time object.Date d = dateFormat.parse(strTime);The following is the complete example.Example Live Demoimport java.text.DateFormat; import java.util.Date; import java.text.SimpleDateFormat; public class Demo { public static void main(String[] args) throws Exception { String strTime = "20:15:40"; DateFormat dateFormat = new SimpleDateFormat("hh:mm:ss"); Date d = dateFormat.parse(strTime); System.out.println("Resultant Date and Time = " + d); } }OutputResultant Date and Time = Thu Jan 01 20:15:40 UTC 1970
The StringBuffer append() method appends the String representation of the particular argument to the sequence. It is a method of the java.lang.StringBuffer class. This method returns a reference to the object.The method changes the value of the object called in the method. Each primitive data type will have a separate method −public StringBuffer append(double d) public StringBuffer append(float f) public StringBuffer append(int i) public StringBuffer append(String str) public StringBuffer append(long l) public StringBuffer append(char[] str) public StringBuffer append(char[] str, int offset, int len) public StringBuffer append(Object obj) public StringBuffer append(boolean b) public StringBuffer append(char c) public StringBuffer append(StringBuffer sb)ExampleA program ... Read More
Use the indexOf() method to search the index of a character in a string.Let’s say the following is our string.String myStr = "amit";Now, let us find the index of character ‘t’ in the above string.strIndex = myStr.indexOf('t');The following is the final example.Example Live Demopublic class Demo { public static void main(String[] args) { String myStr = "amit"; int strIndex = 0; System.out.println("String: "+myStr); // finding index of character t strIndex = myStr.indexOf('t'); System.out.println("Character m found at index: "+strIndex); } }OutputString: amit Character m found at index: 3
To find the length of the StringBuffer object, the length() function is used. It is a method of the StringBuffer Class. The method returns the count of characters in the sequence.Declaration- The java.lang.StringBuffer.length() method is declared as follows −public int length()Let us see an example program illustrating the use of length() method −Example Live Demopublic class Example { public static void main(String[] args) { StringBuffer sb = new StringBuffer("Hello World"); int len = sb.length(); // computes the length of the StringBuffer Object System.out.println(len); } }Output11
The setLength(int newLength) method is used to change the length of the StringBuffer Object. It sets the length of the character sequence. The character sequence is updated to a new one whose length is determined by the value passed as the parameter in the method. The newLength should be greater than or equal to zero.The java.lang.StringBuffer(int newLength) method is declared as follows −public void setLength(int newLength)Let us see a example program illustrating the use of setLength(int newLength) methodExample Live Demopublic class Example { public static void main(String[] args) { StringBuffer sb = new StringBuffer("Hello World"); ... Read More