Question

java 类 eclipse

// Compiled from GridLayout.java (version 1.2 : 46.0, super bit)
public final class org.eclipse.swt.layout.GridLayout extends org.eclipse.swt.widgets.Layout {

// Field descriptor #11 I
public int numColumns;
-----------------------------------
// Method descriptor #4 ()V
// Stack: 2, Locals: 1
public GridLayout();
0 aload_0 [this]
1 invokespecial org.eclipse.swt.widgets.Layout() [337]
4 aload_0 [this]
5 iconst_1
6 putfield org.eclipse.swt.layout.GridLayout.numColumns : int [306]
9 aload_0 [this]
10 iconst_0
=-----------------------------------
[pc: 54, line: 142]
Local variable table:
[pc: 0, pc: 55] local: this index: 0 type: org.eclipse.swt.layout.GridLayout

// Method descriptor #9 (IZ)V
// Stack: 2, Locals: 3
public GridLayout(int numColumns, boolean makeColumnsEqualWidth);
0 aload_0 [this]
1 invokespecial org.eclipse.swt.widgets.Layout() [337]
4 aload_0 [this]
------------------------------------
[pc: 0, pc: 65] local: makeColumnsEqualWidth index: 2 type: boolean

// Method descriptor #218 (Lorg/eclipse/swt/widgets/Composite;IIZ)Lorg/eclipse/swt/graphics/Point;
// Stack: 8, Locals: 6
protected org.eclipse.swt.graphics.Point computeSize(org.eclipse.swt.widgets.Composite composite, int wHint, int hHint, boolean flushCache);
0 aload_0 [this]
1 aload_1 [composite]
---------------------------------
[pc: 14, pc: 39] local: size index: 5 type: org.eclipse.swt.graphics.Point

// Method descriptor #213 (Lorg/eclipse/swt/widgets/Control;)Z
// Stack: 1, Locals: 3
protected boolean flushCache(org.eclipse.swt.widgets.Control control);
0 aload_1 [control]
1 invokevirtual org.eclipse.swt.widgets.Control.getLayoutData() : java.lang.Object [335]
4 astore_2 [data]
5 aload_2 [data]
---------------------------------

// Method descriptor #220 ([[Lorg/eclipse/swt/widgets/Control;IIIIZ)Lorg/eclipse/swt/layout/GridData;
// Stack: 3, Locals: 13
org.eclipse.swt.layout.GridData getData(org.eclipse.swt.widgets.Control[][] grid, int row, int column, int rowCount, int columnCount, boolean first);
0 aload_1 [grid]
1 iload_2 [row]
2 aaload
---------------------------
[pc: 93, pc: 132] local: j index: 12 type: int

// Method descriptor #211 (Lorg/eclipse/swt/widgets/Composite;Z)V
// Stack: 8, Locals: 4
protected void layout(org.eclipse.swt.widgets.Composite composite, boolean flushCache);
0 aload_1 [composite]
1 invokevirtual org.eclipse.swt.widgets.Composite.getClientArea() : org.eclipse.swt.graphics.Rectangle [331]
4 astore_3 [rect]
5 aload_0 [this]
6 aload_1 [composite]
--------------------------------
[pc: 5, pc: 30] local: rect index: 3 type: org.eclipse.swt.graphics.Rectangle
------------------------------------------
这些什么意识！！！

Answer 1

这是用eclipse打开的GridLayout 类的class文件，没有源代码，你可以下载源代码，然后导入，就可以看见Java代码了