[java]
//通過append()方法連接各種類型的數據
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello \n");
buf.append("Hello ").append("World!\n");
buf.append("數字：").append(1).append("\n");//代碼鏈
buf.append("佈爾：").append(true);
System.out.println(buf);
}
}*/
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello ");
fun(buf);
System.out.println(buf);
}
public static void fun(StringBuffer s){
s.append("MLDN ").append("LiXingHua");
}
}*/
//Hello MLDN LiXingHua
//直接使用insert()方法在指定位置上為StringBuffer添加內容
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello!!!");
buf.insert(0,"Hello ");
System.out.println(buf);
buf.insert(buf.length()," MLDN~~");
System.out.println(buf);
}
}*/
//字符串反轉操作–reverse
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("World!!!");
buf.insert(0,"Hello ");
String str = buf.reverse().toString();
System.out.println(str);
}
}*/
//替換指定范圍的內容–replace
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello ").append("World!!");
buf.replace(6,11,"LiXiHua");
System.out.println(buf);
}
}*/
//字符串截取–substring
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello ").append("World!!");
buf.replace(6,11,"LiXiHua");
String str = buf.substring(6,15);
System.out.println(str);
}
}*/
//刪除指定范圍的字符串–delete
/*public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello ").append("World!!");
buf.replace(6,11,"LiXiHua");
String str = buf.delete(6,15).toString();
System.out.println(str);
}
}*/
//查找指定的內容是否存在–indexOf
public class Append{
public static void main(String []args){
StringBuffer buf = new StringBuffer();
buf.append("Hello ").append("World!!");
if(buf.indexOf("Hello")==-1){
System.out.println("沒有找到指定內容");
}else{
System.out.println("可以找到指定內容");
}
}
}