1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 public class InstField { 18 public boolean mBoolean1, mBoolean2; 19 public byte mByte1, mByte2; 20 public char mChar1, mChar2; 21 public short mShort1, mShort2; 22 public int mInt1, mInt2; 23 public float mFloat1, mFloat2; 24 public long mLong1, mLong2; 25 public double mDouble1, mDouble2; 26 public volatile long mVolatileLong1, mVolatileLong2; 27 28 public void run() { 29 assignFields(); 30 checkFields(); 31 InstField.nullCheck(null); 32 } 33 34 /* 35 * Check access to instance fields through a null pointer. 36 */ 37 static public void nullCheck(InstField nully) { 38 System.out.println("InstField.nullCheck"); 39 try { 40 int x = nully.mInt1; 41 Main.assertTrue(false); 42 } catch (NullPointerException npe) { 43 // good 44 } 45 try { 46 long l = nully.mLong1; 47 Main.assertTrue(false); 48 } catch (NullPointerException npe) { 49 // good 50 } 51 try { 52 nully.mInt1 = 5; 53 Main.assertTrue(false); 54 } catch (NullPointerException npe) { 55 // good 56 } 57 try { 58 nully.mLong1 = 17L; 59 Main.assertTrue(false); 60 } catch (NullPointerException npe) { 61 // good 62 } 63 } 64 65 public void assignFields() { 66 System.out.println("InstField assign..."); 67 mBoolean1 = true; 68 mBoolean2 = false; 69 mByte1 = 127; 70 mByte2 = -128; 71 mChar1 = 32767; 72 mChar2 = 65535; 73 mShort1 = 32767; 74 mShort2 = -32768; 75 mInt1 = 65537; 76 mInt2 = -65537; 77 mFloat1 = 3.1415f; 78 mFloat2 = -1.0f / 0.0f; // -inf 79 mLong1 = 1234605616436508552L; // 0x1122334455667788 80 mLong2 = -1234605616436508552L; 81 mDouble1 = 3.1415926535; 82 mDouble2 = 1.0 / 0.0; // +inf 83 mVolatileLong1 = mLong1 - 1; 84 mVolatileLong2 = mLong2 + 1; 85 } 86 87 public void checkFields() { 88 System.out.println("InstField check..."); 89 Main.assertTrue(mBoolean1); 90 Main.assertTrue(!mBoolean2); 91 Main.assertTrue(mByte1 == 127); 92 Main.assertTrue(mByte2 == -128); 93 Main.assertTrue(mChar1 == 32767); 94 Main.assertTrue(mChar2 == 65535); 95 Main.assertTrue(mShort1 == 32767); 96 Main.assertTrue(mShort2 == -32768); 97 Main.assertTrue(mInt1 == 65537); 98 Main.assertTrue(mInt2 == -65537); 99 Main.assertTrue(mFloat1 > 3.141f && mFloat1 < 3.142f); 100 Main.assertTrue(mFloat2 < mFloat1); 101 Main.assertTrue(mLong1 == 1234605616436508552L); 102 Main.assertTrue(mLong2 == -1234605616436508552L); 103 Main.assertTrue(mDouble1 > 3.141592653 && mDouble1 < 3.141592654); 104 Main.assertTrue(mDouble2 > mDouble1); 105 Main.assertTrue(mVolatileLong1 == 1234605616436508551L); 106 Main.assertTrue(mVolatileLong2 == -1234605616436508551L); 107 } 108 } 109
