连接字符串
连接字符串
public class StringConcatenate {//连接字符串
public static void main(String[] args) {
long startTime = System.currentTimeMillis();
for(int i=0;i<5000;i++) {
String result = "This is" + "testing the" + "difference"
+ "between" + "String" + "and" + "StringBuffer";
}
long endTime = System.currentTimeMillis();
System.out.println("字符串连接" + " - 使用 + 操作符 :" + (endTime - startTime) + "ms");
long startTime1 = System.currentTimeMillis();
for(int i=0;i<5000;i++) {
StringBuffer result = new StringBuffer();
result.append("This is");
result.append("testing the");
result.append("between");
result.append("String");
result.append("and");
result.append("StringBuffer");
}
long endTime1 = System.currentTimeMillis();
System.out.println("字符串连接" + " - 使用 StringBuffer : " + (endTime1 - startTime1) + "ms");
}
}

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