gs gs128 Java String Handling - StringBuffer Class in java - Quiz No.1

 StringBuffer s new StringBuffer("Hello"); s.deleteCharAt(0); 

 class output { public static void main(String args[]) { String a = "hello i love java"; System.out.println(a.indexOf('e')+" "+a.indexOf('a')+" "+a.lastIndexOf('l')+" "+a.lastIndexOf('v')); } }

 class output { public static void main(String args[]) { StringBuffer c = new StringBuffer("Hello"); c.delete(0,2); System.out.println(c); } }

 class output { public static void main(String args[]) { StringBuffer c = new StringBuffer("Hello"); StringBuffer c1 = new StringBuffer(" World"); c.append(c1); System.out.println(c); } }

 class output { public static void main(String args[]) { StringBuffer s1 = new StringBuffer("Hello"); StringBuffer s2 = s1.reverse(); System.out.println(s2); } }

 class output { class output { public static void main(String args[]) { char c[]={'A', '1', 'b' ,' ' ,'a' , '0'}; for (int i = 0; i < 5; ++i) { i++; if(Character.isDigit(c[i])) System.out.println(c[i]+" is a digit"); if(Character.isWhitespace(c[i])) System.out.println(c[i]+" is a Whitespace character"); if(Character.isUpperCase(c[i])) System.out.println(c[i]+" is an Upper case Letter"); if(Character.isLowerCase(c[i])) System.out.println(c[i]+" is a lower case Letter"); i++; } } }