参考链接
示例代码1:
public class TestInfo {
private static String str =null;
public static void main(String[] args) {
System.out.println("test exception");
try {
if(str.equals("name")){
System.out.println("test exception");
}
} catch (Exception e) {
System.out.println(e.toString());
System.out.println(e.getMessage());
}
}
}
输出结果:
java.lang.NullPointerException
null
示例代码2:
public class TestInfo {
private static int m = 0;
public static void main(String[] args) {
System.out.println("test exception");
try {
m = 899/0;
} catch (Exception e) {
System.out.println(e.toString());
System.out.println(e.getMessage());
}
}
}
输出结果:
java.lang.ArithmeticException: / by zero
/ by zero
总结:
-
e.toString()
: 获得异常种类和错误信息 -
e.getMessage()
:获得错误信息 -
e.printStackTrace()
:在控制台打印出异常种类,错误信息和出错位置等