1，String -- StringBuffer
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By constructing method
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By append () method
2，StringBuffer -- String
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By constructing method
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By toString () method
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By subString (0, length);
public class Demo6_StringBuffer {
/**
* * A:String -- StringBuffer
* a:通过构造方法
* b:通过append()方法
* B:StringBuffer -- String
* a:通过构造方法
* b:通过toString()方法
* c:通过subString(0,length);
*/
public static void main(String[] args) {
//demo1();
StringBuffer sb = new StringBuffer("heima");
String s1 = new String(sb); //通过构造将StringBuffer转换为String
System.out.println(s1);
String s2 = sb.toString(); //通过toString方法将StringBuffer转换为String
System.out.println(s2);
String s3 = sb.substring(0, sb.length()); //通过截取子字符串将StringBuffer转换为String
System.out.println(s3);
}
private static void demo1() {
StringBuffer sb1 = new StringBuffer("heima"); //通过构造方法将字符串转换为StringBuffer对象
System.out.println(sb1);
StringBuffer sb2 = new StringBuffer();
sb2.append("heima"); //通过append方法将字符串转换为StringBuffer对象
System.out.println(sb2);
}
}