Clase StringBuffer - UT3

length

public class length{ public static void main (String args[]) { int i; Console c; c = new Console(); StringBuffer str3; str3=new StringBuffer("hola"); i=str3.length();//retorna 4 c.println(i); } }

capacity

public class capacity{ public static void main (String args[]) { int i; Console c; c = new Console(); StringBuffer str3; str3=new StringBuffer("hola"); i=str3.capacity();//retorna 20 (16+largo de "hola") c.println(i); } }

setLength

public class setlength{ public static void main (String args[]) { int i; Console c; c = new Console(); StringBuffer str3; str3=new StringBuffer("hola"); str3.setLength(50);//setea el largo del Stringbuffer de 4 a 50 i=str3.length();//retorna 50 c.println(i); } }

charAt

public class charAt{ public static void main (String args[]) { char i; Console c; c = new Console(); StringBuffer str3; str3=new StringBuffer("hola"); i=str3.charAt(2);//retorna 'l' c.println(i); i=str3.charAt(0);//retorna 'h' c.println(i); } }

delete

public class deletetest{ public static void main(String args[]){ StringBuilder sb = new StringBuilder("abcdefghijk"); sb.delete(3,7); System.out.println(sb); } } Output: abchijk

replace

public class replacetest { public static void main(String[] args) { StringBuffer sb = new StringBuffer("Java abc StringBuffer"); System.out.println("Output :"+sb); sb.replace(5, 8, "replace"); System.out.println("Output :"+sb); } } Output :Java abc StringBuffer Output :Java replace StringBuffer

substring

public class substringtest { public static void main(String args[]) { StringBuffer sb = new StringBuffer("one two one"); int i; i = sb.indexOf("one"); System.out.println("First index: " + i); i = sb.lastIndexOf("one"); System.out.println("Last index: " + i); } } Output: First index : 0 Output: Last index: 8

toString

public class toString{ public static void main (String args[]) { char i; Console c; c = new Console(); c.println("Ejemplo de uso de toString"); StringBuffer str3; String str; str3=new StringBuffer("hola"); str=str3.toString();// str queda como "hola" c.println(str); } }

reverse

public class reverse{ public static void main (String args[]) { char i; Console c; c = new Console(); c.println("Ejemplo de uso de reverse"); StringBuffer str3; str3=new StringBuffer("hola"); str3=str3.reverse();//str3 queda como "aloh" c.println(str3.toString()); } }

insert

public class insert{ public static void main (String args[]) { char i; Console c; c = new Console(); c.println("Ejemplo de uso de insert"); char valor[]={'a','b','c'}; char ch='O'; boolean f=true; int a=1; long b=3; double g=7; StringBuffer str3; str3=new StringBuffer("hola"); str3=str3.insert(2,"Mundo");//str3 queda como "hoMundola" c.println(str3.toString()); str3=str3.insert(0,valor);//str3 queda como "abchoMundola" c.println(str3.toString()); str3=str3.insert(3,ch);//str3 queda como "abcOhoMundola" c.println(str3.toString()); str3=str3.insert(0,f);//str3 queda como "trueabcOhoMundola" c.println(str3.toString()); str3=str3.insert(1,a);//str3 queda como "t1rueabcOhoMundola" c.println(str3.toString()); str3=str3.insert(1,b);//str3 queda como "t31rueabcOhoMundola" c.println(str3.toString()); str3=str3.insert(1,g);//str3 queda como "t7.031rueabcOhoMundola" c.println(str3.toString()); } }

getChars

public class getChars{ public static void main (String args[]) {Console c = new Console(); c.println ("Ejemplo de uso de getchars"); char valor[]={'a','b','c'}; StringBuffer str; str=new StringBuffer("Hola Mundo"); str.getChars(2,4,valor,1); // Se copia del StringBuffer str, de la posicion 2 a la 4 // al arreglo valor, empezando desde la posicion 1 c.println(valor[0]); // retorna a c.println(valor[1]); // retorna l c.println(valor[2]); // retorna a } }