//不能直接用
StringBuffer sb = new StringBuffer("huaban");    
String s = sb;                             //這個是錯誤的

public class Demo6_StringBuffer {

	/**
	 * * A:String -- StringBuffer
		* a:通過構造方法
		* b:通過append()方法
	* B:StringBuffer -- String
		* a:通過構造方法
		* b:通過toString()方法
		* c:通過subString(0,length);

	 */
	public static void main(String[] args) {
		//demo1();
		StringBuffer sb = new StringBuffer("heima");
		
		String s1 = new String(sb);						//通過構造將StringBuffer轉換為String
		System.out.println(s1);
		
		String s2 = sb.toString();						//通過toString方法將StringBuffer轉換為String
		System.out.println(s2);
		
		String s3 = sb.substring(0, sb.length());		//通過擷取子字串將StringBuffer轉換為String
		System.out.println(s3);
	}

	private static void demo1() {
		StringBuffer sb1 = new StringBuffer("heima");			//通過構造方法將字串轉換為StringBuffer物件
		System.out.println(sb1);
		
		StringBuffer sb2 = new StringBuffer();
		sb2.append("heima");									//通過append方法將字串轉換為StringBuffer物件
		System.out.println(sb2);
	}

}