1.StringBuffer转换为String:
StringBuffer buffer = new StringBuffer(“Hello World.”);
String str = buffer.toString();
2.String转化为StringBuffer:
1、利用构造函数
String str = “Hello World.”;
StringBuffer buffer = new StringBuffer(str);
2、调用append函数
String str = “Hello World.”;
StringBuffer buffer2 = new StringBuffer();
buffer2.append(str);
3.String转换为字符数组:
String str = “Hello World.”;
char[] ch = str.toCharArray();
4.字符数组转换为String:
1、利用String类的构造函数,直接在构造String时完成转换。
char[] ch = {'a', 'b', 'c'};
String str = new String(ch);
2、调用String类的valueOf函数转换。
String.valueOf(char[] ch);
5.StringBuffer转换为字符数组:
Java不支持从StringBuffer转换为字符数组。可先将StringBuffer转换为String,再将String转换为字符数组。
StringBuffer buffer = new StringBuffer(“Hello World.”);
String str = buffer.toString();
char[] ch = str.toCharArray();
6.字符数组转换为StringBuffer:
char[] ch= {'H', 'e', 'l','l', 'o', 'd'};
String str = new String();
str.valueOf(char[] ch); // 组转换成String
StringBuffer buffer1 = new StringBuffer(str);
StringBuffer buffer2 = new StringBuffer();
buffer2.append(str);