View Compilation Error

0_0_25428837_29293\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_25428837_29293\Main.java:3: 错误: 需要class, interface或enum
     	int t = scanf.nextInt();
     	^
0_0_25428837_29293\Main.java:4: 错误: 需要class, interface或enum
     	for(int i=1; i<=t; i++)
     	^
0_0_25428837_29293\Main.java:4: 错误: 需要class, interface或enum
     	for(int i=1; i<=t; i++)
     	             ^
0_0_25428837_29293\Main.java:4: 错误: 需要class, interface或enum
     	for(int i=1; i<=t; i++)
     	                   ^
0_0_25428837_29293\Main.java:7: 错误: 需要class, interface或enum
     		BigInteger b = scanf.nextBigInteger();
     		^
0_0_25428837_29293\Main.java:8: 错误: 需要class, interface或enum
     		BigInteger sum = a.add(b);
     		^
0_0_25428837_29293\Main.java:9: 错误: 需要class, interface或enum
     		System.out.println("Case " + i + ":");
     		^
0_0_25428837_29293\Main.java:10: 错误: 需要class, interface或enum
     		System.out.println(a + " + " + b + " = " + sum);
     		^
0_0_25428837_29293\Main.java:11: 错误: 需要class, interface或enum
     	}
     	^
10 个错误